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The Project Gutenberg eBook of The Kansas University
Quarterly, Vol. I, No. 2, October 1892
This eBook is for the use of anyone anywhere in the United States and most
other parts of the world at no cost and with almost no restrictions
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Title: The Kansas University Quarterly, Vol. I, No. 2, October 1892
Author: Various
Editor: Vernon L. Kellogg
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Most recently updated: October 17, 2024
Language: English
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*** START OF THE PROJECT GUTENBERG EBOOK THE KANSAS
UNIVERSITY QUARTERLY, VOL. I, NO. 2, OCTOBER 1892 ***
Quarterly, Vol. I, No. 2, October 1892
This eBook is for the use of anyone anywhere in the United States and most
other parts of the world at no cost and with almost no restrictions
whatsoever. You may copy it, give it away or re-use it under the terms of
the Project Gutenberg License included with this eBook or online at
www.gutenberg.org. If you are not located in the United States, you will
have to check the laws of the country where you are located before using
this eBook.
Title: The Kansas University Quarterly, Vol. I, No. 2, October 1892
Author: Various
Editor: Vernon L. Kellogg
Release date: January 17, 2020 [eBook #61188]
Most recently updated: October 17, 2024
Language: English
Other information and formats: www.gutenberg.org/ebooks/61188
Credits: Produced by Paul Marshall and the Online Distributed
Proofreading Team at http://www.pgdp.net (This book was
produced from images made available by the HathiTrust
Digital Library.)
*** START OF THE PROJECT GUTENBERG EBOOK THE KANSAS
UNIVERSITY QUARTERLY, VOL. I, NO. 2, OCTOBER 1892 ***
Page 4
Vol. I. OCTOBER, 1892 No. 2.
The
Kansas University
Quarterly
CONTENTS
Unicursal Curves by Method of Inversion, H. B. Newson
Foreign Settlements in Kansas, W. H. Carruth
The Great Spirit Spring Mound, R. H. S. Bailey
On Pascal’s Limaçon and the Cardioid, H. C. Riggs
Dialect Word-List, W. H. Carruth
PUBLISHED BY THE UNIVERSITY
Lawrence, Kansas
Price of this number, 50 cents
Entered at the Post-office in Lawrence as Second-class matter.
COMMITTEE OF PUBLICATION
E. H. S. BAILEY F. W. BLACKMAR
The
Kansas University
Quarterly
CONTENTS
Unicursal Curves by Method of Inversion, H. B. Newson
Foreign Settlements in Kansas, W. H. Carruth
The Great Spirit Spring Mound, R. H. S. Bailey
On Pascal’s Limaçon and the Cardioid, H. C. Riggs
Dialect Word-List, W. H. Carruth
PUBLISHED BY THE UNIVERSITY
Lawrence, Kansas
Price of this number, 50 cents
Entered at the Post-office in Lawrence as Second-class matter.
COMMITTEE OF PUBLICATION
E. H. S. BAILEY F. W. BLACKMAR
Page 5
W. H. CARRUTH C. G. DUNLAP
E. MILLER S. W. WILLISTON
V. L. KELLOGG, Managing Editor
Journal Publishing House
Lawrence, Kansas
1892
Kansas University Quarterly.
Vol. I. OCTOBER, 1892 No. 2.
E. MILLER S. W. WILLISTON
V. L. KELLOGG, Managing Editor
Journal Publishing House
Lawrence, Kansas
1892
Kansas University Quarterly.
Vol. I. OCTOBER, 1892 No. 2.
Page 6
Unicursal Curves by Method of Inversion.
BY
HENRY BYRON NEWSON.
This paper contains a summary of the work done during the last school year by my class in
Modern Geometry. Since many of the results were suggested or entirely wrought out by class-
room discussion, it becomes practically impossible to assign to each member of the class his
separate portion. Many of the results were contributed by Messrs. M. E. Rice, A. L. Candy, H.
C. Riggs, and Miss Annie L. MacKinnon.
The reader who is not familiar with the method of Geometric Inversion should read
Townsend’s Modern Geometry, chapters IX and XXIV; or a recent monograph entitled, “Das
Princep der Reziproken Radien,” by C. Wolff, of Erlangen.
When a conic is inverted from a point on the curve, the inverse curve is a nodal, circular
cubic.
This is shown analytically as follows: let the equation of the conic be written
ax² + 2hxy + by² + 2gx + 2fy = 0 ;
which shows that the origin is a point on the curve. Substituting for
x y
x and y ——— and —— ,
x² + y² x² + y²
we have as the equation of the inverse curve
ax² + 2hxy + by² + 2(gx + fy)(x² + y²) = 0.
The terms of the second degree show that the origin is a double point on the cubic; and is a
crunode, acnode, or cusp, according as the conic is a hyperbola, ellipse, or parabola. The terms
of the third degree break up into three linear factors, viz: gx + fy, x + iy, and x - iy, which
are the equations of the three lines joining the origin to the three points where the line at infinity
cuts the cubic; thus showing that the cubic passes through the imaginary circular points at
infinity.
Since the above transformation is rational, it follows that there is a (1, 1) correspondence
between the conic and the cubic. This fact is also evident from the nature of the method of
inversion. The cubic has its maximum number of double points, viz: one; and hence is unicursal.
This unicursal circular cubic may be projected into the most general form of unicursal cubic; the
cuspidal variety, however, always remaining cuspidal.
BY
HENRY BYRON NEWSON.
This paper contains a summary of the work done during the last school year by my class in
Modern Geometry. Since many of the results were suggested or entirely wrought out by class-
room discussion, it becomes practically impossible to assign to each member of the class his
separate portion. Many of the results were contributed by Messrs. M. E. Rice, A. L. Candy, H.
C. Riggs, and Miss Annie L. MacKinnon.
The reader who is not familiar with the method of Geometric Inversion should read
Townsend’s Modern Geometry, chapters IX and XXIV; or a recent monograph entitled, “Das
Princep der Reziproken Radien,” by C. Wolff, of Erlangen.
When a conic is inverted from a point on the curve, the inverse curve is a nodal, circular
cubic.
This is shown analytically as follows: let the equation of the conic be written
ax² + 2hxy + by² + 2gx + 2fy = 0 ;
which shows that the origin is a point on the curve. Substituting for
x y
x and y ——— and —— ,
x² + y² x² + y²
we have as the equation of the inverse curve
ax² + 2hxy + by² + 2(gx + fy)(x² + y²) = 0.
The terms of the second degree show that the origin is a double point on the cubic; and is a
crunode, acnode, or cusp, according as the conic is a hyperbola, ellipse, or parabola. The terms
of the third degree break up into three linear factors, viz: gx + fy, x + iy, and x - iy, which
are the equations of the three lines joining the origin to the three points where the line at infinity
cuts the cubic; thus showing that the cubic passes through the imaginary circular points at
infinity.
Since the above transformation is rational, it follows that there is a (1, 1) correspondence
between the conic and the cubic. This fact is also evident from the nature of the method of
inversion. The cubic has its maximum number of double points, viz: one; and hence is unicursal.
This unicursal circular cubic may be projected into the most general form of unicursal cubic; the
cuspidal variety, however, always remaining cuspidal.
Page 7
By applying the method of inversion to many of the well known theorems of conics, new
theorems are obtained for unicursal, circular cubics. If one of these new theorems states a
projective property, it may at once by the method of projection be extended to all unicursal
cubics. Examples will be given below.
The following method of generating a unicursal cubic is often useful. Given two projective
pencils of rays having their vertices at A and B; the locus of the intersection of corresponding
rays is a conic through A and B. Invert the whole system from A. The pencil through A remains
as a whole unchanged, while the pencil through B inverts into a system of co-axial circles
through A and B, and the generated conic becomes a circular cubic through A and B, having a
node at A. Now project the whole figure and we have the following:—given a system of conics
through four fixed points and a pencil of rays projective with it and having its vertex at one of
the fixed points, the locus of the intersection of corresponding elements of the two systems is a
unicursal cubic, having its node at the vertex of the pencil, and passing through the three other
fixed points.
Unicursal cubics are divisible into two distinct varieties, nodal and cuspidal. The nodal
variety is a curve of the fourth class and has three points of inflection, one of which is always
real. The cuspidal variety is of the third class and has one point of inflection (Salmon, H. P. C.,
Art. 147). Each of these varieties forms a group projective within itself; that is to say, any nodal
cubic may be projected into every other possible nodal cubic, and the same is true with regard to
the cuspidal. But a nodal cubic can not be projected into a cuspidal and vice versa.
In applying this method of investigation to the various forms of unicursal cubics and
quartics, only a limited number of theorems are given in each case. It will be at once evident that
many more theorems might be added, but enough are given in each case to illustrate the method
and show the range of its application. It is not necessary to work out all the details, as this paper
is intended to be suggestive rather than exhaustive.
NODAL CUBICS.
If an ellipse be inverted from one of its vertices, the inverse curve is symmetrical with
respect to the axis; it has one point of inflection at infinity and the asymptote is an inflectional
tangent. This asymptote is the inverse of the circle of curvature at the vertex. The cubic has two
other points of inflection situated symmetrically with respect to the axis. Hence the three points
of inflection lie on a right line, a projective theorem which is consequently true of all nodal
cubics. The axis is evidently the harmonic polar of the point of inflection at infinity. Since the
axis bisects the angle between the tangents at the node, it follows that the line joining a point of
inflection to the node, the two tangents at the node, and the harmonic polar of the point of
inflection, form a harmonic pencil. There are three such lines, one to each node, and three
harmonic polars; these form a pencil in involution, the tangents at the node being the foci.
Since the asymptote is perpendicular to the axis, we have by projection the following
theorem:—through a point of inflection I, draw any line cutting the cubic in B and C. Through P
the point of intersection of the harmonic polar and inflectional tangent of I, draw two lines to B
and C. The four lines meeting in P form a harmonic pencil. The point of contact of the tangent
from I to the cubic is on the harmonic polar of I. Any two inflectional tangents meet on the
harmonic polar of the third point of inflection.
theorems are obtained for unicursal, circular cubics. If one of these new theorems states a
projective property, it may at once by the method of projection be extended to all unicursal
cubics. Examples will be given below.
The following method of generating a unicursal cubic is often useful. Given two projective
pencils of rays having their vertices at A and B; the locus of the intersection of corresponding
rays is a conic through A and B. Invert the whole system from A. The pencil through A remains
as a whole unchanged, while the pencil through B inverts into a system of co-axial circles
through A and B, and the generated conic becomes a circular cubic through A and B, having a
node at A. Now project the whole figure and we have the following:—given a system of conics
through four fixed points and a pencil of rays projective with it and having its vertex at one of
the fixed points, the locus of the intersection of corresponding elements of the two systems is a
unicursal cubic, having its node at the vertex of the pencil, and passing through the three other
fixed points.
Unicursal cubics are divisible into two distinct varieties, nodal and cuspidal. The nodal
variety is a curve of the fourth class and has three points of inflection, one of which is always
real. The cuspidal variety is of the third class and has one point of inflection (Salmon, H. P. C.,
Art. 147). Each of these varieties forms a group projective within itself; that is to say, any nodal
cubic may be projected into every other possible nodal cubic, and the same is true with regard to
the cuspidal. But a nodal cubic can not be projected into a cuspidal and vice versa.
In applying this method of investigation to the various forms of unicursal cubics and
quartics, only a limited number of theorems are given in each case. It will be at once evident that
many more theorems might be added, but enough are given in each case to illustrate the method
and show the range of its application. It is not necessary to work out all the details, as this paper
is intended to be suggestive rather than exhaustive.
NODAL CUBICS.
If an ellipse be inverted from one of its vertices, the inverse curve is symmetrical with
respect to the axis; it has one point of inflection at infinity and the asymptote is an inflectional
tangent. This asymptote is the inverse of the circle of curvature at the vertex. The cubic has two
other points of inflection situated symmetrically with respect to the axis. Hence the three points
of inflection lie on a right line, a projective theorem which is consequently true of all nodal
cubics. The axis is evidently the harmonic polar of the point of inflection at infinity. Since the
axis bisects the angle between the tangents at the node, it follows that the line joining a point of
inflection to the node, the two tangents at the node, and the harmonic polar of the point of
inflection, form a harmonic pencil. There are three such lines, one to each node, and three
harmonic polars; these form a pencil in involution, the tangents at the node being the foci.
Since the asymptote is perpendicular to the axis, we have by projection the following
theorem:—through a point of inflection I, draw any line cutting the cubic in B and C. Through P
the point of intersection of the harmonic polar and inflectional tangent of I, draw two lines to B
and C. The four lines meeting in P form a harmonic pencil. The point of contact of the tangent
from I to the cubic is on the harmonic polar of I. Any two inflectional tangents meet on the
harmonic polar of the third point of inflection.
Page 8
The locus of the foot of the perpendicular from the focus of a conic on a tangent is the
auxiliary circle. Inverting from the vertex, there are two points, A and B, on the axis of the
curve, such that if a circle be drawn through one of them and the node, cutting at right angles a
tangent circle through the node, their point of intersection will be on the tangent to the curve
where it is cut by the axis. Projecting:—through a point of inflection I of a nodal cubic draw a
line cutting the cubic in P and Q; there are two determinate points on the harmonic polar of I,
which have the following property:—draw a conic through P, Q, and the node touching the
cubic; draw another conic through one of these points, P, Q, and the node cutting the former, so
that their tangents at their point of intersection, together with the lines from it to P and Q form a
harmonic pencil; the locus of such a point of intersection is the tangent from I to the cubic.
If three conics circumscribe the same quadrilateral, the common tangent to any two is cut
harmonically by the third. Inverting from one of the vertices of the quadrilateral: if three nodal,
circular cubics have a common double point and pass through three other fixed points, the
common tangent circle through the common node to any two of the cubics is cut harmonically
by the third; i. e., so that the pencil from the node to the two points of intersection and the points
of contact is harmonic. Projecting this:—given three nodal cubics having a common node and
passing through five other fixed points; let a conic be passed through the common node and two
of the fixed points, touching two of the cubics. The pencil from the common node to the points
of contact and the point where the conic cuts the third cubic is harmonic.
The following theorem may be proved in similar manner:—given a system of cubics having
a common node and passing through five other fixed points; let a conic be drawn through the
common node and two of the fixed points; the lines drawn from the points where it cuts the
cubics to the common node form a pencil in involution.
A variable chord drawn through a fixed point P to a conic subtends a pencil in involution at
any point O on the conic. Inverting from O:—a system of circles through the double point of a
nodal circular cubic and any other fixed point P, is cut by the cubic in pairs of points which
determine at the node a pencil in involution. Projecting:—a system of conics through the node of
a unicursal cubic, two fixed points on the curve, and any fourth fixed point, is cut by the cubic in
pairs of points which determine at the node a pencil in involution.
We give another proof of the theorem that the three points of inflection of a nodal cubic lie
on a right line. This is easily shown by inversion and is a beautiful example of the method.
There are three points on a conic whose osculating circles pass through a given point on the
conic; these three points lie on a circle passing through the given point.[1] (Salmon’s Conics, Art.
244, Ex. 5.) By inverting from the given point and then projecting, we readily see that there are
three points of inflection on a nodal cubic which lie on a right line. If the above conic be an
ellipse, the three osculating circles are all real; but if it be a hyperbola, one only is real. Hence an
acnodal cubic has three real points of inflection, while a crunodal one has one real and two
imaginary.
The reciprocals of many of the theorems of this section are of interest and will be given
under Quartics.
CUSPIDAL CUBICS.[2]
auxiliary circle. Inverting from the vertex, there are two points, A and B, on the axis of the
curve, such that if a circle be drawn through one of them and the node, cutting at right angles a
tangent circle through the node, their point of intersection will be on the tangent to the curve
where it is cut by the axis. Projecting:—through a point of inflection I of a nodal cubic draw a
line cutting the cubic in P and Q; there are two determinate points on the harmonic polar of I,
which have the following property:—draw a conic through P, Q, and the node touching the
cubic; draw another conic through one of these points, P, Q, and the node cutting the former, so
that their tangents at their point of intersection, together with the lines from it to P and Q form a
harmonic pencil; the locus of such a point of intersection is the tangent from I to the cubic.
If three conics circumscribe the same quadrilateral, the common tangent to any two is cut
harmonically by the third. Inverting from one of the vertices of the quadrilateral: if three nodal,
circular cubics have a common double point and pass through three other fixed points, the
common tangent circle through the common node to any two of the cubics is cut harmonically
by the third; i. e., so that the pencil from the node to the two points of intersection and the points
of contact is harmonic. Projecting this:—given three nodal cubics having a common node and
passing through five other fixed points; let a conic be passed through the common node and two
of the fixed points, touching two of the cubics. The pencil from the common node to the points
of contact and the point where the conic cuts the third cubic is harmonic.
The following theorem may be proved in similar manner:—given a system of cubics having
a common node and passing through five other fixed points; let a conic be drawn through the
common node and two of the fixed points; the lines drawn from the points where it cuts the
cubics to the common node form a pencil in involution.
A variable chord drawn through a fixed point P to a conic subtends a pencil in involution at
any point O on the conic. Inverting from O:—a system of circles through the double point of a
nodal circular cubic and any other fixed point P, is cut by the cubic in pairs of points which
determine at the node a pencil in involution. Projecting:—a system of conics through the node of
a unicursal cubic, two fixed points on the curve, and any fourth fixed point, is cut by the cubic in
pairs of points which determine at the node a pencil in involution.
We give another proof of the theorem that the three points of inflection of a nodal cubic lie
on a right line. This is easily shown by inversion and is a beautiful example of the method.
There are three points on a conic whose osculating circles pass through a given point on the
conic; these three points lie on a circle passing through the given point.[1] (Salmon’s Conics, Art.
244, Ex. 5.) By inverting from the given point and then projecting, we readily see that there are
three points of inflection on a nodal cubic which lie on a right line. If the above conic be an
ellipse, the three osculating circles are all real; but if it be a hyperbola, one only is real. Hence an
acnodal cubic has three real points of inflection, while a crunodal one has one real and two
imaginary.
The reciprocals of many of the theorems of this section are of interest and will be given
under Quartics.
CUSPIDAL CUBICS.[2]
Page 9
Inverting the parabola from its vertex we obtain the Cissoid of Diocles. The focus of the
parabola inverts into a point on the cuspidal tangent which I shall call the focus of the cissoid.
The circle of curvature at the vertex of the parabola inverts into the asymptote of the cissoid.
This asymptote is also plainly the inflectional tangent, and the point at infinity is the point of
inflection. The directrix of the parabola inverts into a circle through the cusp of the cissoid
having the cuspidal tangent for a diameter. Hall calls this the directrix circle. The double
ordinate of the parabola which is tangent to the circle of curvature of the vertex inverts into the
circle usually called the base circle of the cissoid.[3]
The cissoid may fairly be called the simplest form of the cuspidal cubic. Its projection and
polar reciprocal are both cuspidal cubics. I shall now deduce from the parabola a few simple
propositions for the cissoid, and then extend them to all cuspidal cubics.
(1) It is known that the locus of the intersection of tangents to the parabola which are at right
angles to one another, is the directrix. Inverting:—the locus of the intersection of tangent circles
to the cissoid through the cusp and at right angles to each other is the directrix circle.
(2) For the parabola, two right lines O P and O Q, are drawn through the vertex of the
parabola at right angles to one another, meeting the curve in P and Q; the line P Q cuts the axis
at a fixed point, whose abscissa is equal to its ordinate. Inverting:—two right lines, O P and O
Q, are drawn at right angles to one another through the cusp of the cissoid, meeting the curve in
P and Q; the circle O P Q passes through the intersection of the axis and asymptote.
(3) If the normals at the points P, O, R, of a parabola meet at a point, the circle through P O
R will pass through the vertex. Inverting:—through a fixed point and the cusp of a cissoid, three
and only three circles can be passed, cutting the cissoid at right angles; these three points of
intersection are collinear.
From the geometry of the cissoid we see that if any line be drawn parallel to the asymptote,
cutting the curve in two points, B and C, the segment B C is bisected by the axis. Hence,
projecting the curve we have the following theorem:—any line drawn through the point of
inflection is cut harmonically by the point of inflection, the curve, and the cuspidal tangent.
Thus the cuspidal tangent is the harmonic polar of the point of inflection. The polar reciprocal of
this last theorem reads as follows:—if from any point on the cuspidal tangent the two other
tangent lines be drawn to the curve, and a line to the point of inflection, these four lines form a
harmonic pencil. These are fundamental propositions in the theory of cuspidal cubics.
(4) Projecting proposition (1) above, we have the generalized theorem:—through the point
of inflection draw any line cutting the cubic in B and C; through B, C, and the cusp draw two
conics tangent to the cubic, and intersecting in a fourth point such that the two tangents to the
conics at their point of intersection, together with the two lines from it to B and C, form a
harmonic pencil; the locus of all such intersections is a conic through B, C, and the cusp having
the point of inflection and the cuspidal tangent for pole and polar.
(5) Reciprocating (4) we have:—through any point on the cuspidal tangent draw the two
other tangents, B and C, to the cubic. Touching B, C, and the inflectional tangent draw two
conics, such that the points of contact of their common tangent, together with the points where
their common tangent cuts the tangents B and C, form a harmonic range; the envelope of such
common tangents is a conic having the cuspidal tangent and the point of inflection for polar and
pole.
parabola inverts into a point on the cuspidal tangent which I shall call the focus of the cissoid.
The circle of curvature at the vertex of the parabola inverts into the asymptote of the cissoid.
This asymptote is also plainly the inflectional tangent, and the point at infinity is the point of
inflection. The directrix of the parabola inverts into a circle through the cusp of the cissoid
having the cuspidal tangent for a diameter. Hall calls this the directrix circle. The double
ordinate of the parabola which is tangent to the circle of curvature of the vertex inverts into the
circle usually called the base circle of the cissoid.[3]
The cissoid may fairly be called the simplest form of the cuspidal cubic. Its projection and
polar reciprocal are both cuspidal cubics. I shall now deduce from the parabola a few simple
propositions for the cissoid, and then extend them to all cuspidal cubics.
(1) It is known that the locus of the intersection of tangents to the parabola which are at right
angles to one another, is the directrix. Inverting:—the locus of the intersection of tangent circles
to the cissoid through the cusp and at right angles to each other is the directrix circle.
(2) For the parabola, two right lines O P and O Q, are drawn through the vertex of the
parabola at right angles to one another, meeting the curve in P and Q; the line P Q cuts the axis
at a fixed point, whose abscissa is equal to its ordinate. Inverting:—two right lines, O P and O
Q, are drawn at right angles to one another through the cusp of the cissoid, meeting the curve in
P and Q; the circle O P Q passes through the intersection of the axis and asymptote.
(3) If the normals at the points P, O, R, of a parabola meet at a point, the circle through P O
R will pass through the vertex. Inverting:—through a fixed point and the cusp of a cissoid, three
and only three circles can be passed, cutting the cissoid at right angles; these three points of
intersection are collinear.
From the geometry of the cissoid we see that if any line be drawn parallel to the asymptote,
cutting the curve in two points, B and C, the segment B C is bisected by the axis. Hence,
projecting the curve we have the following theorem:—any line drawn through the point of
inflection is cut harmonically by the point of inflection, the curve, and the cuspidal tangent.
Thus the cuspidal tangent is the harmonic polar of the point of inflection. The polar reciprocal of
this last theorem reads as follows:—if from any point on the cuspidal tangent the two other
tangent lines be drawn to the curve, and a line to the point of inflection, these four lines form a
harmonic pencil. These are fundamental propositions in the theory of cuspidal cubics.
(4) Projecting proposition (1) above, we have the generalized theorem:—through the point
of inflection draw any line cutting the cubic in B and C; through B, C, and the cusp draw two
conics tangent to the cubic, and intersecting in a fourth point such that the two tangents to the
conics at their point of intersection, together with the two lines from it to B and C, form a
harmonic pencil; the locus of all such intersections is a conic through B, C, and the cusp having
the point of inflection and the cuspidal tangent for pole and polar.
(5) Reciprocating (4) we have:—through any point on the cuspidal tangent draw the two
other tangents, B and C, to the cubic. Touching B, C, and the inflectional tangent draw two
conics, such that the points of contact of their common tangent, together with the points where
their common tangent cuts the tangents B and C, form a harmonic range; the envelope of such
common tangents is a conic having the cuspidal tangent and the point of inflection for polar and
pole.
Page 10
(6) Projecting (2) we obtain the following:—through the point of inflection draw any line
cutting the curve in B and C; take any other two points on the cubic such that the pencil from the
cusp, O, O (B P C Q) is harmonic; the conic passing through O B P C Q will pass through the
intersection of the cuspidal and inflectional tangents.
(7) Reciprocating (6):—from any point on the cuspidal tangent draw two other tangents, B
and C, to the cubic; take any two other tangents, P and Q, such that the range cut from the
inflectional tangent by B, C, P, Q, is harmonic; the conic touching B, C, P, Q, and the
inflectional tangent will also touch the line joining the point of inflection and the cusp.
(8) Projecting (3):—through the point of inflection draw any line cutting the cubic in B and
C; through the cusp O and the points B and C on the cubic and any other fixed point P, three,
and only three, conics can be passed, such that the tangent to the conic and cubic at their
remaining point of intersection, together with the lines from it to B and C, form a harmonic
pencil; these three points of intersection are collinear.
SYSTEMS OF CUBICS THROUGH NINE POINTS.
Let U and V be the equations of two given cubics, then U + kV is the equation of a system of
cubics through their nine points of intersection. Twelve cubics of this system are unicursal, and
the twelve nodes are called the twelve critic centres of the system. (See Salmon’s H. P. C., Art.
190.)
Let the equation of the system be written briefly
a + ka₁ + (b + kb₁) x + (c + kc₁) y + u₂ + u₃ = 0 ;
one, and only one, value of k makes the absolute term vanish; hence one, and only one, curve of
the system passes through the origin, which may be any point in the plane. Make the equation of
the system homogeneous by means of z, and differentiate twice with respect to z; we obtain thus
the equations of the polar conics and polar lines of the origin with respect to the system.
The polar conics of the origin are given by
3(a + ka₁) + 2{ (b + kb₁) x + (c + kc₁)y } + u₂ = 0 ;
thus showing that the polar conics of any point, with respect to the system of cubics, form a
system through four points. The polar lines of the origin are given by
3(a + ka₁) + (b + kb₁) x + (c + kc₁)y = 0 ,
which represents a pencil of lines through a point.
Suppose now the origin to be at one of the critic centres; then for a particular value, k₁, all
terms lower than the second degree must vanish, so that
║a b c║
║ ║ = 0.
║a₁ b₁ c₁║
cutting the curve in B and C; take any other two points on the cubic such that the pencil from the
cusp, O, O (B P C Q) is harmonic; the conic passing through O B P C Q will pass through the
intersection of the cuspidal and inflectional tangents.
(7) Reciprocating (6):—from any point on the cuspidal tangent draw two other tangents, B
and C, to the cubic; take any two other tangents, P and Q, such that the range cut from the
inflectional tangent by B, C, P, Q, is harmonic; the conic touching B, C, P, Q, and the
inflectional tangent will also touch the line joining the point of inflection and the cusp.
(8) Projecting (3):—through the point of inflection draw any line cutting the cubic in B and
C; through the cusp O and the points B and C on the cubic and any other fixed point P, three,
and only three, conics can be passed, such that the tangent to the conic and cubic at their
remaining point of intersection, together with the lines from it to B and C, form a harmonic
pencil; these three points of intersection are collinear.
SYSTEMS OF CUBICS THROUGH NINE POINTS.
Let U and V be the equations of two given cubics, then U + kV is the equation of a system of
cubics through their nine points of intersection. Twelve cubics of this system are unicursal, and
the twelve nodes are called the twelve critic centres of the system. (See Salmon’s H. P. C., Art.
190.)
Let the equation of the system be written briefly
a + ka₁ + (b + kb₁) x + (c + kc₁) y + u₂ + u₃ = 0 ;
one, and only one, value of k makes the absolute term vanish; hence one, and only one, curve of
the system passes through the origin, which may be any point in the plane. Make the equation of
the system homogeneous by means of z, and differentiate twice with respect to z; we obtain thus
the equations of the polar conics and polar lines of the origin with respect to the system.
The polar conics of the origin are given by
3(a + ka₁) + 2{ (b + kb₁) x + (c + kc₁)y } + u₂ = 0 ;
thus showing that the polar conics of any point, with respect to the system of cubics, form a
system through four points. The polar lines of the origin are given by
3(a + ka₁) + (b + kb₁) x + (c + kc₁)y = 0 ,
which represents a pencil of lines through a point.
Suppose now the origin to be at one of the critic centres; then for a particular value, k₁, all
terms lower than the second degree must vanish, so that
║a b c║
║ ║ = 0.
║a₁ b₁ c₁║
Page 11
The factors of the terms of u₂, which involves k₁, represent the tangents at the double point
to the nodal cubic, and also the polar conic of the origin with respect to this nodal cubic. Hence
a critic centre is at one of the vertices of the self-polar triangle of its system of polar conics. The
opposite side of this triangle is the common polar line of the critic centre with respect to its
system of polar conics, and hence it is also the common polar line of the critic centre with
respect to the system of cubics. The four basal points of the system of polar conics lie two and
two upon the tangents at the double point of the nodal cubic.
When the origin is taken at one of the nine basal points of the system of cubics, a and a₁ both
vanish. Hence it is readily seen that a basal point of a system of cubics is also a basal point of its
system of polar conics and the vertex of its pencil of polar lines.
Suppose two of the basal points of the system of cubics to coincide, then every cubic of the
system, in order to pass through two coincident points, must touch a common tangent at a fixed
point. The common tangent is the common polar of its point of contact, both with respect to the
system of cubics and to its system of polar conics. Hence the union of two basal points gives rise
to a critic centre. The self-polar triangle of its system of polar conics here reduces to a limited
portion of the common tangent. This line is not a tangent to the nodal cubic, but only passes
through its double point.
Suppose three of the basal points of a system of cubics to coincide, such a point will then be
a point of inflection on each cubic of the system. For, in the last case, if a line be drawn from the
point of contact of the common tangent to a third basal point of the system, such a line will be a
common chord of the system of cubics. Suppose, now, this third basal point be moved along the
curves until it coincides with the other two; then the common chord becomes a common tangent,
which cuts every cubic of the system in three coincident points, and hence is a common
inflectional tangent.
Since the polar conic of a point of inflection on a cubic consists of the inflectional tangent
and the harmonic polar of the point, and since the polar conics of a fixed point with respect to a
system of cubics pass through four fixed points, it follows that in a system of cubics having a
common point of inflection and a common inflectional tangent the harmonic polars of the
common point of inflection meet in a point.
Since the common inflectional tangent is the common polar line of the common point of
inflection, it follows that such a point is a critic centre of the system of cubics. One cubic of the
system then has a node at the common point of inflection of the system, and forms an exception.
The line which is the common inflectional tangent to the other cubics of the system cuts this also
in three points, but is one of the tangents at the double point; the other tangent at the double
point goes through the vertex of the pencil of harmonic polars.
It is evident that the nine basal points of a system of conics may unite into three groups of
three each. The cubics will then all have three common points of inflection, and at these points
three common inflectional tangents. These three points all lie on a line.
When four basal points of the system of cubics coincide, such a point is a double point on
every cubic of the system. This is easily shown as follows, using the method of inversion. Let a
system of conics through four points be inverted from one of the four points. The system of
conics inverts into a system of cubics, having a common node and passing through three other
finite fixed points and the two circular points at infinity. Since the common node counts as four
points of intersection, it follows that any two cubics of the system, and hence all of them,
to the nodal cubic, and also the polar conic of the origin with respect to this nodal cubic. Hence
a critic centre is at one of the vertices of the self-polar triangle of its system of polar conics. The
opposite side of this triangle is the common polar line of the critic centre with respect to its
system of polar conics, and hence it is also the common polar line of the critic centre with
respect to the system of cubics. The four basal points of the system of polar conics lie two and
two upon the tangents at the double point of the nodal cubic.
When the origin is taken at one of the nine basal points of the system of cubics, a and a₁ both
vanish. Hence it is readily seen that a basal point of a system of cubics is also a basal point of its
system of polar conics and the vertex of its pencil of polar lines.
Suppose two of the basal points of the system of cubics to coincide, then every cubic of the
system, in order to pass through two coincident points, must touch a common tangent at a fixed
point. The common tangent is the common polar of its point of contact, both with respect to the
system of cubics and to its system of polar conics. Hence the union of two basal points gives rise
to a critic centre. The self-polar triangle of its system of polar conics here reduces to a limited
portion of the common tangent. This line is not a tangent to the nodal cubic, but only passes
through its double point.
Suppose three of the basal points of a system of cubics to coincide, such a point will then be
a point of inflection on each cubic of the system. For, in the last case, if a line be drawn from the
point of contact of the common tangent to a third basal point of the system, such a line will be a
common chord of the system of cubics. Suppose, now, this third basal point be moved along the
curves until it coincides with the other two; then the common chord becomes a common tangent,
which cuts every cubic of the system in three coincident points, and hence is a common
inflectional tangent.
Since the polar conic of a point of inflection on a cubic consists of the inflectional tangent
and the harmonic polar of the point, and since the polar conics of a fixed point with respect to a
system of cubics pass through four fixed points, it follows that in a system of cubics having a
common point of inflection and a common inflectional tangent the harmonic polars of the
common point of inflection meet in a point.
Since the common inflectional tangent is the common polar line of the common point of
inflection, it follows that such a point is a critic centre of the system of cubics. One cubic of the
system then has a node at the common point of inflection of the system, and forms an exception.
The line which is the common inflectional tangent to the other cubics of the system cuts this also
in three points, but is one of the tangents at the double point; the other tangent at the double
point goes through the vertex of the pencil of harmonic polars.
It is evident that the nine basal points of a system of conics may unite into three groups of
three each. The cubics will then all have three common points of inflection, and at these points
three common inflectional tangents. These three points all lie on a line.
When four basal points of the system of cubics coincide, such a point is a double point on
every cubic of the system. This is easily shown as follows, using the method of inversion. Let a
system of conics through four points be inverted from one of the four points. The system of
conics inverts into a system of cubics, having a common node and passing through three other
finite fixed points and the two circular points at infinity. Since the common node counts as four
points of intersection, it follows that any two cubics of the system, and hence all of them,
Page 12
intersect in nine points. This system can be projected into a system having a common double
point and passing through any five other fixed points.
A number of theorems concerning the system of cubics can easily be inferred from known
theorems concerning the system of conics. Since two conics of the system are parabolas, it
follows that two cubics of the system are cuspidal. Since three conics of the system break up
into pairs of right lines, it follows that three cubics of the system break up into a right line and a
conic. Each right line and its corresponding conic intersect in the common double point. The line
at infinity cuts the system of conics in pairs of points in involution, the points of contact of the
two parabolas of the system being the foci; it follows on inversion that the pairs of tangents to
the cubics at their common node form a pencil in involution, the two cuspidal tangents being the
foci.
If the four basal points of the system of conics lie on a circle, this circle inverts into a right
line, and one cubic then consists of this right line and the lines joining the centre of inversion to
the circular points at infinity. This theorem may be stated for the system of cubics as follows: if
the conic determined by the five basal points of the system of cubics (not counting the common
double points), break up into right lines, the line passing through three of the five points,
together with the lines joining the other two points to the common node, constitute a cubic of the
system.
If three of the four basal points of the system of conics lie on a line, the conics consist of this
line and a pencil of lines through the fourth basal point. Inverting from this fourth point and then
projecting, we have a system of cubics consisting of a pencil of lines and a conic through the
vertex and the four other fixed points. Hence, when the five fixed points of such a system of
cubics lie on a conic through the common node, this conic is a part of every cubic of the system.
If we invert the above system of conics from one of the three points on the right line, and then
project, we obtain a system of cubics which consists of a system of conics through four fixed
points, and a fixed right line through one of these four points. Hence, if two of the five basal
points of such a system of cubics be on a line through the common node, this line is a part of
every cubic of the system.
If a system of conics having one basal point at infinity be inverted from one of the remaining
basal points, this point at infinity inverts to the center of inversion, and we obtain a system of
cubics having five coincident basal points and hence passing through only four others. The
system of cubics is now so arranged that one tangent at their common double point is common
to all. Only one cubic of the system is cuspidal. As before three cubics break up into a right line
and conic.
If two of three basal points of the system of conics be at infinity, the system of cubics
obtained by projection and inversion has six coincident basal points and hence only three others.
This system has both tangents at the common node common to all cubics of the system. If the
two basal points at infinity in the system of conics be coincident, all the conics are parabolas,
and hence all the cubics of the system are cuspidal and have a common cuspidal tangent.
If three of the basal points of the system of conics be at infinity, the conics consist of the line
at infinity and a pencil of lines through the finite basal point. Inverting from the latter, we obtain
a system of cubics with seven coincident basal points. This system is made up of a pencil of
lines meeting in the seven coincident basal points together with the two lines joining this to the
other two basal points of the system. These two lines are part of every cubic of the system.
point and passing through any five other fixed points.
A number of theorems concerning the system of cubics can easily be inferred from known
theorems concerning the system of conics. Since two conics of the system are parabolas, it
follows that two cubics of the system are cuspidal. Since three conics of the system break up
into pairs of right lines, it follows that three cubics of the system break up into a right line and a
conic. Each right line and its corresponding conic intersect in the common double point. The line
at infinity cuts the system of conics in pairs of points in involution, the points of contact of the
two parabolas of the system being the foci; it follows on inversion that the pairs of tangents to
the cubics at their common node form a pencil in involution, the two cuspidal tangents being the
foci.
If the four basal points of the system of conics lie on a circle, this circle inverts into a right
line, and one cubic then consists of this right line and the lines joining the centre of inversion to
the circular points at infinity. This theorem may be stated for the system of cubics as follows: if
the conic determined by the five basal points of the system of cubics (not counting the common
double points), break up into right lines, the line passing through three of the five points,
together with the lines joining the other two points to the common node, constitute a cubic of the
system.
If three of the four basal points of the system of conics lie on a line, the conics consist of this
line and a pencil of lines through the fourth basal point. Inverting from this fourth point and then
projecting, we have a system of cubics consisting of a pencil of lines and a conic through the
vertex and the four other fixed points. Hence, when the five fixed points of such a system of
cubics lie on a conic through the common node, this conic is a part of every cubic of the system.
If we invert the above system of conics from one of the three points on the right line, and then
project, we obtain a system of cubics which consists of a system of conics through four fixed
points, and a fixed right line through one of these four points. Hence, if two of the five basal
points of such a system of cubics be on a line through the common node, this line is a part of
every cubic of the system.
If a system of conics having one basal point at infinity be inverted from one of the remaining
basal points, this point at infinity inverts to the center of inversion, and we obtain a system of
cubics having five coincident basal points and hence passing through only four others. The
system of cubics is now so arranged that one tangent at their common double point is common
to all. Only one cubic of the system is cuspidal. As before three cubics break up into a right line
and conic.
If two of three basal points of the system of conics be at infinity, the system of cubics
obtained by projection and inversion has six coincident basal points and hence only three others.
This system has both tangents at the common node common to all cubics of the system. If the
two basal points at infinity in the system of conics be coincident, all the conics are parabolas,
and hence all the cubics of the system are cuspidal and have a common cuspidal tangent.
If three of the basal points of the system of conics be at infinity, the conics consist of the line
at infinity and a pencil of lines through the finite basal point. Inverting from the latter, we obtain
a system of cubics with seven coincident basal points. This system is made up of a pencil of
lines meeting in the seven coincident basal points together with the two lines joining this to the
other two basal points of the system. These two lines are part of every cubic of the system.
Page 13
If one of the remaining basal points be moved up to join the seven coincident ones, one of
these fixed lines becomes indeterminate, and the system of cubics through eight coincident
points consists of a fixed line through the eight coincident points and the ninth fixed point
together with any two lines of the pencil through the eight points. If the nine basal points
coincide, any three lines through it form a cubic of the system.
UNICURSAL QUARTICS.
The inverse of a conic from any point not on the curve is a nodal bicircular quartic. This is
shown by inverting the general equation of the conic
ax² + 2hxy + by² + 2gx + 2fy + c = 0 ;
x y
by substituting for x and ———
———
y and ,
x² + y² x² + y²
we get the equation
ax² + 2hxy + by² + 2(gx + fy)(x² + y²) + c(x² + y²)² = 0.
The origin is evidently a double point on the curve, and is a crunode, acnode, or cusp
according as the conic is a hyperbola, ellipse, or parabola. The factors of the terms of the fourth
degree, viz: (x + iy) (x + iy) (x - iy) (x - iy), show that the two imaginary circular points at
infinity are double points on the quartic, which is thus trinodal. Hence this nodal, bicircular
quartic can be projected into the most general form of the trinodal quartic. Trinodal quartics are
unicursal.
If the conic which we invert be a parabola, the quartic has two nodes and one cusp. If the
conic be inverted from a focus, the quartic has the two circular points at infinity for cusps. This
is best shown analytically as follows: let the equation of the conic, origin being at the focus, be
written
x² y² 2aex b²
—— + —— + —— - — = 0.
a² b² a² a²
Inverting this we have
x² y² 2aex(x² + y²) b²(x² + y²)²
—— + —— + —————— - ————— = 0.
a² b² a² a²
these fixed lines becomes indeterminate, and the system of cubics through eight coincident
points consists of a fixed line through the eight coincident points and the ninth fixed point
together with any two lines of the pencil through the eight points. If the nine basal points
coincide, any three lines through it form a cubic of the system.
UNICURSAL QUARTICS.
The inverse of a conic from any point not on the curve is a nodal bicircular quartic. This is
shown by inverting the general equation of the conic
ax² + 2hxy + by² + 2gx + 2fy + c = 0 ;
x y
by substituting for x and ———
———
y and ,
x² + y² x² + y²
we get the equation
ax² + 2hxy + by² + 2(gx + fy)(x² + y²) + c(x² + y²)² = 0.
The origin is evidently a double point on the curve, and is a crunode, acnode, or cusp
according as the conic is a hyperbola, ellipse, or parabola. The factors of the terms of the fourth
degree, viz: (x + iy) (x + iy) (x - iy) (x - iy), show that the two imaginary circular points at
infinity are double points on the quartic, which is thus trinodal. Hence this nodal, bicircular
quartic can be projected into the most general form of the trinodal quartic. Trinodal quartics are
unicursal.
If the conic which we invert be a parabola, the quartic has two nodes and one cusp. If the
conic be inverted from a focus, the quartic has the two circular points at infinity for cusps. This
is best shown analytically as follows: let the equation of the conic, origin being at the focus, be
written
x² y² 2aex b²
—— + —— + —— - — = 0.
a² b² a² a²
Inverting this we have
x² y² 2aex(x² + y²) b²(x² + y²)²
—— + —— + —————— - ————— = 0.
a² b² a² a²
Page 14
Now transform this equation so that the lines joining the origin to the circular points at
infinity shall be the axes of reference. To do this
let x + iy = x₁ and x - iy = y₁;
x1 + y1 x1 - y1
∴ x = ——— and y = ———
2 2i
Making these substitutions and reducing we have (dropping the subscripts),
(x² + 2xy + y²) (x² - 2xy + y²) 4aexy(x + y) b²x²y²
- - - =
—————— —————— —————— —————
0.
a² b² a² a²
Making this equation homogeneous by means of z, we have
(x² + 2xy + y²) (x² - 2xy + y²) 4aexy(x + y) b²x²y²
- - - =
z² —————— —————— —————— —————
0.
a² b² a² a²
which is the equation of the quartic referred to the triangle formed by the three nodes. We are
now able to determine the nature of the node at the vertex (y, z). Factor x² out of all the terms
which contain it; and arrange thus:
z² z² 4aexyz b²y²
x² — - — - ——— - ——
a² b² a² a²
yz² yz² 2aexy² z
+ 2x — + — - ———
a² b² a²
y²z² y²z²
+ — - — =0.
a² b²
infinity shall be the axes of reference. To do this
let x + iy = x₁ and x - iy = y₁;
x1 + y1 x1 - y1
∴ x = ——— and y = ———
2 2i
Making these substitutions and reducing we have (dropping the subscripts),
(x² + 2xy + y²) (x² - 2xy + y²) 4aexy(x + y) b²x²y²
- - - =
—————— —————— —————— —————
0.
a² b² a² a²
Making this equation homogeneous by means of z, we have
(x² + 2xy + y²) (x² - 2xy + y²) 4aexy(x + y) b²x²y²
- - - =
z² —————— —————— —————— —————
0.
a² b² a² a²
which is the equation of the quartic referred to the triangle formed by the three nodes. We are
now able to determine the nature of the node at the vertex (y, z). Factor x² out of all the terms
which contain it; and arrange thus:
z² z² 4aexyz b²y²
x² — - — - ——— - ——
a² b² a² a²
yz² yz² 2aexy² z
+ 2x — + — - ———
a² b² a²
y²z² y²z²
+ — - — =0.
a² b²
Page 15
The quantity which multiplies x² represents the two tangents at the double point (y, z); but
this quantity is a perfect square and hence we have a cusp. In this way the point (x, z) may be
shown to be a cusp. Lastly, when a parabola is inverted from the focus, we obtain a tricuspidal
quartic.
The trinodal quartic can be generated in a manner analogous to that shown for the nodal
cubic. Let two projective pencils of rays have their vertices at A and B, the locus of intersection
of corresponding rays is a conic through A and B. Invert from any point O in the plane, and we
obtain two systems of co-axial circles, O A being the axis of one and O B of the other. The locus
of intersection of corresponding circles is a bicircular quartic having a node at O. Projecting the
whole figure we have the following theorem:—two projective systems of conics through O P Q
A and O P Q B generate by their corresponding intersections a trinodal quartic having its nodes
at O, P, and Q, and passing through A and B.
It is evident that the quartic generated in this way may have three nodes, one node and two
cusps, two nodes and one cusp, or three cusps, depending upon the nature of the conic inverted
and the centre of inversion. Making this the basis of classification we thus distinguish four
varieties of unicursal quartics. To these must be added a fifth variety, viz: the quartic with a
triple point. Each of these varieties will be considered separately.
The method of treating unicursal quartics given in this and the next four sections is in some
respects similar to that suggested by Cayley in Salmon’s Higher Plane Curves. But the method
here sketched out is very different in its point of view and much wider in its application,
yielding a multitude of new theorems not suggested by Cayley’s method.
TRINODAL QUARTICS.
The quartic with three double points is a curve of the sixth class having four double tangents
and six cusps (Salmon’s H. P. C. Art. 243). Hence its reciprocal is of the sixth degree with four
double points, six cusps, three double tangents, and no points of inflection.
The locus of intersection of tangents to a conic at right angles to one another is a circle.
Inverting:—the locus of intersection of circles through the node and tangent a nodal, bicircular
quartic and at right angles to one another is a circle. Projecting:—through the three nodes of a
quartic draw two conics, each touching the quartic and intersecting so that the two tangents to
the conics at their point of intersection, together with the lines from it to two of the nodes, form
a harmonic pencil; the locus of all such intersections is a conic through these two nodes.
Whenever the two tangents to the quartic from the third node, together with the lines from it to
the other two nodes, form a harmonic pencil, this last conic breaks up into two right lines.
Any chord of a conic through O is cut harmonically by the conic and the polar of O.
Inverting from O and projecting:—from one of the nodes of a trinodal quartic draw the two
tangents to the quartic (not tangents at the node); draw the conic through these two points of
contact and the three nodes; any line through the first mentioned node is cut harmonically by
this conic, the quartic and the line joining the other two nodes.
If a triangle circumscribe a conic, the three lines from the angular points of the triangle to the
points of contact of the opposite sides intersect in a point. Inverting and projecting:—through
the three nodes of a quartic draw three conics touching the quartic; through the point of
this quantity is a perfect square and hence we have a cusp. In this way the point (x, z) may be
shown to be a cusp. Lastly, when a parabola is inverted from the focus, we obtain a tricuspidal
quartic.
The trinodal quartic can be generated in a manner analogous to that shown for the nodal
cubic. Let two projective pencils of rays have their vertices at A and B, the locus of intersection
of corresponding rays is a conic through A and B. Invert from any point O in the plane, and we
obtain two systems of co-axial circles, O A being the axis of one and O B of the other. The locus
of intersection of corresponding circles is a bicircular quartic having a node at O. Projecting the
whole figure we have the following theorem:—two projective systems of conics through O P Q
A and O P Q B generate by their corresponding intersections a trinodal quartic having its nodes
at O, P, and Q, and passing through A and B.
It is evident that the quartic generated in this way may have three nodes, one node and two
cusps, two nodes and one cusp, or three cusps, depending upon the nature of the conic inverted
and the centre of inversion. Making this the basis of classification we thus distinguish four
varieties of unicursal quartics. To these must be added a fifth variety, viz: the quartic with a
triple point. Each of these varieties will be considered separately.
The method of treating unicursal quartics given in this and the next four sections is in some
respects similar to that suggested by Cayley in Salmon’s Higher Plane Curves. But the method
here sketched out is very different in its point of view and much wider in its application,
yielding a multitude of new theorems not suggested by Cayley’s method.
TRINODAL QUARTICS.
The quartic with three double points is a curve of the sixth class having four double tangents
and six cusps (Salmon’s H. P. C. Art. 243). Hence its reciprocal is of the sixth degree with four
double points, six cusps, three double tangents, and no points of inflection.
The locus of intersection of tangents to a conic at right angles to one another is a circle.
Inverting:—the locus of intersection of circles through the node and tangent a nodal, bicircular
quartic and at right angles to one another is a circle. Projecting:—through the three nodes of a
quartic draw two conics, each touching the quartic and intersecting so that the two tangents to
the conics at their point of intersection, together with the lines from it to two of the nodes, form
a harmonic pencil; the locus of all such intersections is a conic through these two nodes.
Whenever the two tangents to the quartic from the third node, together with the lines from it to
the other two nodes, form a harmonic pencil, this last conic breaks up into two right lines.
Any chord of a conic through O is cut harmonically by the conic and the polar of O.
Inverting from O and projecting:—from one of the nodes of a trinodal quartic draw the two
tangents to the quartic (not tangents at the node); draw the conic through these two points of
contact and the three nodes; any line through the first mentioned node is cut harmonically by
this conic, the quartic and the line joining the other two nodes.
If a triangle circumscribe a conic, the three lines from the angular points of the triangle to the
points of contact of the opposite sides intersect in a point. Inverting and projecting:—through
the three nodes of a quartic draw three conics touching the quartic; through the point of
Page 16
intersection of two of these conics, the point of contact of the third, and the three nodes draw a
conic; three such conics can be drawn and they pass through a fixed point.
The eight points of contact of two conics with their four common tangents lie on a conic,
which is the locus of a point, the pairs of tangents from which to the two given conics form a
harmonic pencil. Inverting and projecting:—two connodal trinodal quartics have four common
tangent conics through the three nodes; their eight points of contact lie on another connodal
trinodal quartic; if from any point on the last quartic four conics be drawn through the nodes and
tangent in pairs to the first quartics, any line through a node is cut harmonically by these four
conics.
The eight common tangents to two conics at their common points all touch a conic. Inverting
and projecting:—two connodal trinodal quartics intersect in four other points; eight conics can
be drawn through the three nodes tangent to the quartics at these points of intersection; these
eight conics all touch another connodal trinodal quartic.
A series of conics through four fixed points is cut by any transversal in a range of points in
involution. Inverting and projecting:—a series of connodal trinodal quartics can be passed
through four other fixed points; any conic through the three nodes cuts the series of quartics in
pairs of points which determine at a node a pencil in involution. The conic touches two of the
quartics and the lines to the points of contact are the foci of the pencil.
If the sides of two triangles touch a given conic, their six angular points will lie on another
conic. Inverting and projecting:—if two groups of three conics each be passed through three
nodes and tangent to the quartic, their six points of intersection (three of each group) lie on
another connodal trinodal quartic.
If the two triangles are inscribed in a conic, their six sides touch another conic. Inverting and
projecting:—if two groups of three conics each be passed through the three nodes of a quartic so
that the three points of intersection of each group lie on the quartic, these six conics all touch
another connodal trinodal quartic.
A triangle is circumscribed about one conic, and two of its angular points are on a second
conic; the locus of its third angular point is a conic.—Inverting and projecting:—if three conics
be drawn through the three nodes of two connodal trinodal quartics so that they all touch one of
the quartics and two of their points of intersection are on the other quartic, the locus of their
third point of intersection is a connodal trinodal quartic.
A triangle is inscribed in one conic and two of its sides touch a second conic; the envelope of
its third side is a conic. Inverting and projecting:—if three conics be drawn through the three
nodes of two connodal trinodal quartics so that their three points of intersection lie on one of the
quartics and two of them touch the other quartic, the envelope of the third conic is another
connodal trinodal quartic.
The theorems of this section are stated in the most general terms and are still true when one
or more of the nodes are changed into cusps. It is therefore not necessary to give separate
theorems for the case of one cusp and two nodes.
NODAL BICUSPIDAL QUARTICS.
conic; three such conics can be drawn and they pass through a fixed point.
The eight points of contact of two conics with their four common tangents lie on a conic,
which is the locus of a point, the pairs of tangents from which to the two given conics form a
harmonic pencil. Inverting and projecting:—two connodal trinodal quartics have four common
tangent conics through the three nodes; their eight points of contact lie on another connodal
trinodal quartic; if from any point on the last quartic four conics be drawn through the nodes and
tangent in pairs to the first quartics, any line through a node is cut harmonically by these four
conics.
The eight common tangents to two conics at their common points all touch a conic. Inverting
and projecting:—two connodal trinodal quartics intersect in four other points; eight conics can
be drawn through the three nodes tangent to the quartics at these points of intersection; these
eight conics all touch another connodal trinodal quartic.
A series of conics through four fixed points is cut by any transversal in a range of points in
involution. Inverting and projecting:—a series of connodal trinodal quartics can be passed
through four other fixed points; any conic through the three nodes cuts the series of quartics in
pairs of points which determine at a node a pencil in involution. The conic touches two of the
quartics and the lines to the points of contact are the foci of the pencil.
If the sides of two triangles touch a given conic, their six angular points will lie on another
conic. Inverting and projecting:—if two groups of three conics each be passed through three
nodes and tangent to the quartic, their six points of intersection (three of each group) lie on
another connodal trinodal quartic.
If the two triangles are inscribed in a conic, their six sides touch another conic. Inverting and
projecting:—if two groups of three conics each be passed through the three nodes of a quartic so
that the three points of intersection of each group lie on the quartic, these six conics all touch
another connodal trinodal quartic.
A triangle is circumscribed about one conic, and two of its angular points are on a second
conic; the locus of its third angular point is a conic.—Inverting and projecting:—if three conics
be drawn through the three nodes of two connodal trinodal quartics so that they all touch one of
the quartics and two of their points of intersection are on the other quartic, the locus of their
third point of intersection is a connodal trinodal quartic.
A triangle is inscribed in one conic and two of its sides touch a second conic; the envelope of
its third side is a conic. Inverting and projecting:—if three conics be drawn through the three
nodes of two connodal trinodal quartics so that their three points of intersection lie on one of the
quartics and two of them touch the other quartic, the envelope of the third conic is another
connodal trinodal quartic.
The theorems of this section are stated in the most general terms and are still true when one
or more of the nodes are changed into cusps. It is therefore not necessary to give separate
theorems for the case of one cusp and two nodes.
NODAL BICUSPIDAL QUARTICS.
Page 17
A quartic with one node and two cusps is a curve of the fourth class, having one double
tangent and two points of inflection (see Salmon). Hence its reciprocal is also a nodal bicuspidal
quartic, a fact of which frequent note will be made in this section.
The inverse of a conic with respect to a focus is a curve called Pascal’s Limaçon. From the
polar equation of a conic, the focus being the pole, it is evident that the polar equation of the
limaçon may be written in the form:
e 1
r = — cosx + — ;
p p
where e and p are constants, being respectively the eccentricity and semi-latus rectum of the
conic.
From the above equation it is readily seen that the curve may be traced by drawing from a
fixed point O on a circle any number of chords and laying off a constant length on each of these
lines, measured from the circumference of the circle. The point O is the node of the limaçon; and
the fixed circle, which I shall call the base circle, is the inverse of the directrix of the conic. This
is readily shown as follows:—the polar equation of the directrix is r = p / (e cosx). Hence the
equation of its inverse is r = (e cosx) / p, which is the equation of the base circle of the
limaçon.
The envelope of circles on the focal radii of a conic as diameters is the auxiliary circle.
Inverting:—the envelope of perpendiculars at the extremities of the nodal radii of a limaçon is a
circle with its centre on the axis and having double contact with the limaçon. Projecting:—from
any point on a nodal bicuspidal quartic draw lines to the three nodes and a fourth line forming
with them a harmonic pencil; the envelope of all such lines is a conic through the two cusps and
having double contact with the quartic; the chord of contact passes through the node and cuts the
line joining the cusps so that this point of intersection, the two cusps, and intersection of the
double tangent with the cuspidal line form a harmonic range. Reciprocating:—on any tangent to
a nodal bicircular quartic take the three points where it cuts the two inflectional tangents and the
double tangent, and a fourth point forming with these a harmonic range; the locus of all such
points is a conic touching the two inflectional tangents and having double contact with the
quartic; the pole of the chord of contact is on the double tangent; join this last point to the
intersection of the inflectional tangents and join the node with the same intersection; these four
lines form a harmonious pencil.
If the tangent at any point P of a conic meet the directrix in Q, the line P Q will subtend a
right angle at the focus O; the circle P O Q has P Q for a diameter and hence cuts the conic at P
at right angles. Inverting:—from any point P on the limaçon draw O P to the node O; draw O Q
perpendicular to O P meeting the base circle in Q; P Q is normal to the limaçon at P. Projecting:
—from any point P on a nodal bicuspidal quartic draw lines to the three nodes and a fourth
harmonic to these three; from O draw lines to the two cusps and a fourth harmonic to these two
and the line O P; the locus of the intersection of the fourth line of each pencil is a conic through
the three nodes. Call this the basal conic of the quartic. Reciprocating:—on any given tangent to
a nodal bicuspidal quartic take its points of intersection with the double tangent and the
inflectional tangents, and a fourth point harmonic with these; on the double tangent take its
tangent and two points of inflection (see Salmon). Hence its reciprocal is also a nodal bicuspidal
quartic, a fact of which frequent note will be made in this section.
The inverse of a conic with respect to a focus is a curve called Pascal’s Limaçon. From the
polar equation of a conic, the focus being the pole, it is evident that the polar equation of the
limaçon may be written in the form:
e 1
r = — cosx + — ;
p p
where e and p are constants, being respectively the eccentricity and semi-latus rectum of the
conic.
From the above equation it is readily seen that the curve may be traced by drawing from a
fixed point O on a circle any number of chords and laying off a constant length on each of these
lines, measured from the circumference of the circle. The point O is the node of the limaçon; and
the fixed circle, which I shall call the base circle, is the inverse of the directrix of the conic. This
is readily shown as follows:—the polar equation of the directrix is r = p / (e cosx). Hence the
equation of its inverse is r = (e cosx) / p, which is the equation of the base circle of the
limaçon.
The envelope of circles on the focal radii of a conic as diameters is the auxiliary circle.
Inverting:—the envelope of perpendiculars at the extremities of the nodal radii of a limaçon is a
circle with its centre on the axis and having double contact with the limaçon. Projecting:—from
any point on a nodal bicuspidal quartic draw lines to the three nodes and a fourth line forming
with them a harmonic pencil; the envelope of all such lines is a conic through the two cusps and
having double contact with the quartic; the chord of contact passes through the node and cuts the
line joining the cusps so that this point of intersection, the two cusps, and intersection of the
double tangent with the cuspidal line form a harmonic range. Reciprocating:—on any tangent to
a nodal bicircular quartic take the three points where it cuts the two inflectional tangents and the
double tangent, and a fourth point forming with these a harmonic range; the locus of all such
points is a conic touching the two inflectional tangents and having double contact with the
quartic; the pole of the chord of contact is on the double tangent; join this last point to the
intersection of the inflectional tangents and join the node with the same intersection; these four
lines form a harmonious pencil.
If the tangent at any point P of a conic meet the directrix in Q, the line P Q will subtend a
right angle at the focus O; the circle P O Q has P Q for a diameter and hence cuts the conic at P
at right angles. Inverting:—from any point P on the limaçon draw O P to the node O; draw O Q
perpendicular to O P meeting the base circle in Q; P Q is normal to the limaçon at P. Projecting:
—from any point P on a nodal bicuspidal quartic draw lines to the three nodes and a fourth
harmonic to these three; from O draw lines to the two cusps and a fourth harmonic to these two
and the line O P; the locus of the intersection of the fourth line of each pencil is a conic through
the three nodes. Call this the basal conic of the quartic. Reciprocating:—on any given tangent to
a nodal bicuspidal quartic take its points of intersection with the double tangent and the
inflectional tangents, and a fourth point harmonic with these; on the double tangent take its
Page 18
points of intersection with the given tangent and the inflectional tangents, and a fourth point
harmonic with these; the envelope of the lines joining the fourth point of these two ranges is a
conic touching the double and inflectional tangents.
The locus of the foot of the perpendicular from the focus on the tangent to a conic is the
auxiliary circle. Inverting:—draw a circle through the node tangent to a limaçon; draw the
diameter O P of this circle; the locus of P is a circle having double contact with the limaçon, the
axis being the chord of contact. Cor.; the locus of the centre of the tangent circle is also a circle.
Projecting:—through the three nodes of a nodal bicuspidal quartic draw any conic touching the
quartic; the locus of the pole with respect to this conic of the line joining the two cusps is a
conic; draw the chord O P of the first conic through the node O and the pole of the line joining
the two cusps; the locus of P is a conic through the cusps, having double contact with the
quartic.
If chords of a conic subtend a constant angle at the focus, the tangents at the ends of the
chords will meet on a fixed conic, and the chords will envelope another fixed conic; both these
conics will have the same focus and directrix as the given conic. Inverting:—draw two nodal
radii of a limaçon O P and O Q, making a given angle at O; the envelope of the circle P O Q is
another limaçon; the locus of the intersection of circles through O tangent to the limaçon at P
and Q is another limaçon. These two limaçons have the same node and base circle as the given
one. Projecting:—through the node O of a nodal bicuspidal quartic draw a pencil of radii in
involution; let O P and O Q be a conjugate pair of these nodal radii; the envelope of the conic
through P, Q, and the three nodes, is another quartic of the same kind: also draw conics through
the three nodes tangent to the quartic at P and Q; the locus of their point of intersection is
another quartic of the same kind. These three quartics all have the same node, cusps, and base
conic.
Every focal chord of a conic is cut harmonically by the curve, the focus, and directrix.
Inverting:—every nodal chord of a limaçon is bisected by the base circle. Projecting:—every
nodal chord of a nodal bicuspidal quartic is cut harmonically by the quartic, the base conic, and
the line joining the two cusps. Reciprocating:—from any point on the double tangent of a nodal
bicuspidal quartic draw the other two tangents to the quartic and a line to the intersection of the
inflectional tangents; the fourth harmonic to these lines envelopes a conic.
Since the limaçon is symmetrical with respect to the axis, it follows that the two points of
inflection are situated symmetrically with respect to the axis. Hence the line joining the two
points of inflection is parallel to the double tangent. Therefore by projection we infer the
following general theorem for the nodal bicuspidal quartic: the line joining the two cusps, the
line joining the two points of inflection, and the double tangent meet in a point. Also the fourth
harmonic points on each of these lines lie on a line through the node. Reciprocating:—the point
of intersection of the cuspidal tangents, the point of intersection of inflectional tangents, and the
node all lie on a right line. From the node draw a fourth harmonic to this right line and the
tangents at the node; draw a fourth line harmonic to this right line and the inflectional tangents;
draw a fourth harmonic to the cuspidal tangents and this right line; these three lines all meet in a
point on the double tangent.
TRICUSPIDAL QUARTICS.
harmonic with these; the envelope of the lines joining the fourth point of these two ranges is a
conic touching the double and inflectional tangents.
The locus of the foot of the perpendicular from the focus on the tangent to a conic is the
auxiliary circle. Inverting:—draw a circle through the node tangent to a limaçon; draw the
diameter O P of this circle; the locus of P is a circle having double contact with the limaçon, the
axis being the chord of contact. Cor.; the locus of the centre of the tangent circle is also a circle.
Projecting:—through the three nodes of a nodal bicuspidal quartic draw any conic touching the
quartic; the locus of the pole with respect to this conic of the line joining the two cusps is a
conic; draw the chord O P of the first conic through the node O and the pole of the line joining
the two cusps; the locus of P is a conic through the cusps, having double contact with the
quartic.
If chords of a conic subtend a constant angle at the focus, the tangents at the ends of the
chords will meet on a fixed conic, and the chords will envelope another fixed conic; both these
conics will have the same focus and directrix as the given conic. Inverting:—draw two nodal
radii of a limaçon O P and O Q, making a given angle at O; the envelope of the circle P O Q is
another limaçon; the locus of the intersection of circles through O tangent to the limaçon at P
and Q is another limaçon. These two limaçons have the same node and base circle as the given
one. Projecting:—through the node O of a nodal bicuspidal quartic draw a pencil of radii in
involution; let O P and O Q be a conjugate pair of these nodal radii; the envelope of the conic
through P, Q, and the three nodes, is another quartic of the same kind: also draw conics through
the three nodes tangent to the quartic at P and Q; the locus of their point of intersection is
another quartic of the same kind. These three quartics all have the same node, cusps, and base
conic.
Every focal chord of a conic is cut harmonically by the curve, the focus, and directrix.
Inverting:—every nodal chord of a limaçon is bisected by the base circle. Projecting:—every
nodal chord of a nodal bicuspidal quartic is cut harmonically by the quartic, the base conic, and
the line joining the two cusps. Reciprocating:—from any point on the double tangent of a nodal
bicuspidal quartic draw the other two tangents to the quartic and a line to the intersection of the
inflectional tangents; the fourth harmonic to these lines envelopes a conic.
Since the limaçon is symmetrical with respect to the axis, it follows that the two points of
inflection are situated symmetrically with respect to the axis. Hence the line joining the two
points of inflection is parallel to the double tangent. Therefore by projection we infer the
following general theorem for the nodal bicuspidal quartic: the line joining the two cusps, the
line joining the two points of inflection, and the double tangent meet in a point. Also the fourth
harmonic points on each of these lines lie on a line through the node. Reciprocating:—the point
of intersection of the cuspidal tangents, the point of intersection of inflectional tangents, and the
node all lie on a right line. From the node draw a fourth harmonic to this right line and the
tangents at the node; draw a fourth line harmonic to this right line and the inflectional tangents;
draw a fourth harmonic to the cuspidal tangents and this right line; these three lines all meet in a
point on the double tangent.
TRICUSPIDAL QUARTICS.
Page 19
A tricuspidal quartic is a curve of the third class with one double tangent and no inflection.
Its reciprocal is therefore a nodal cubic.
We shall begin by reciprocating some of the simpler properties of nodal cubics. Since the
three points of inflection of a nodal cubic lie on a right line, it follows that the three cuspidal
tangents of a tricuspidal quartic meet in a point. The reciprocal of the harmonic polar of a point
of inflection is a point on the double tangent, found by drawing through the point of intersection
of the three cuspidal tangents a line forming with them a harmonic pencil. Three such lines can
be drawn and it is not difficult to distinguish them. All six lines form a pencil in involution, the
lines to the points of contact of the double tangent being the foci. I shall call such a point on the
double tangent the harmonic point of the cuspidal tangent. Since any two inflectional tangents of
a nodal cubic meet on the harmonic polar of the third point of inflection, it follows that any two
cusps of a trinodal quartic and the harmonic point of the third cuspidal tangent lie on a right line.
Since the point of contact of the tangents from a point of inflection of a nodal cubic is on the
harmonic polar of the point, it follows that the tangent to the tricuspidal quartic at the point
where it is cut by a cuspidal tangent passes through the harmonic point of that cuspidal tangent.
The inverse of the parabola from a focus is the cardioid; and the inverse of the corresponding
directrix is the base circle of the cardioid. The cardioid projects into a tricuspidal quartic and its
base circle projects into a conic through the three cusps which has the same general properties as
the base conic of the nodal bicuspidal quartic.
The circle circumscribing the triangle formed by the three tangents to a parabola passes
through the focus. Inverting:—three circles through the cusp, and tangent to a cardioid, intersect
in three collinear points. Projecting:—three conics through the three cusps of a tricuspidal
quartic and touching the quartic intersect in three collinear points. Reciprocating:—if three
conics touch the three inflectional tangents of a nodal cubic and the cubic itself, their three other
common tangents intersect in a point.
Circles described on the focal radii of a parabola as diameters touch the tangent through the
vertex. Inverting and projecting:—from a point on a tricuspidal quartic lines are drawn to the
three cusps and a fourth line forming a harmonic pencil; the envelope of this fourth line is a
conic through the three cusps and touching the quartic at the point where the latter is cut by one
of the cuspidal tangents. There are three such conics, one corresponding to each cusp. At any
cusp the tangent to its corresponding base conic, the cuspidal tangent, and the lines to the other
two cusps form a harmonic pencil. Reciprocating:—on any tangent to a nodal cubic take the
three points of intersection with the inflectional tangents and a fourth point forming with these a
harmonic range; the locus of this fourth point is a conic touching the three inflectional tangents
and the cubic. The tangent to the cubic where it is touched by the conic goes through a point of
inflection. On any inflectional tangent the point of contact of this conic, the point of inflection,
and the points of intersection of the other two inflectional tangents form a harmonic range.
The circle described on any focal chord of a parabola as diameter will touch the directrix.
Inverting:—the circle described on any cuspidal chord of a cardioid will touch the base circle.
Projecting:—through a cusp C draw any chord of a tricuspidal quartic meeting the quartic in P
and O; draw a conic through P, O, and the other two cusps so that the pencil at P formed by the
tangent to the conic and the lines to the cusps is harmonic; all such conics will touch the base
conic of the cusp C. Reciprocating:—from O, on any inflectional tangent of a nodal cubic, draw
two tangents P and Q to the cubic; draw a conic touching the tangents P and Q and the other two
inflectional tangents so that the range on one of these tangents formed by the point of contact of
Its reciprocal is therefore a nodal cubic.
We shall begin by reciprocating some of the simpler properties of nodal cubics. Since the
three points of inflection of a nodal cubic lie on a right line, it follows that the three cuspidal
tangents of a tricuspidal quartic meet in a point. The reciprocal of the harmonic polar of a point
of inflection is a point on the double tangent, found by drawing through the point of intersection
of the three cuspidal tangents a line forming with them a harmonic pencil. Three such lines can
be drawn and it is not difficult to distinguish them. All six lines form a pencil in involution, the
lines to the points of contact of the double tangent being the foci. I shall call such a point on the
double tangent the harmonic point of the cuspidal tangent. Since any two inflectional tangents of
a nodal cubic meet on the harmonic polar of the third point of inflection, it follows that any two
cusps of a trinodal quartic and the harmonic point of the third cuspidal tangent lie on a right line.
Since the point of contact of the tangents from a point of inflection of a nodal cubic is on the
harmonic polar of the point, it follows that the tangent to the tricuspidal quartic at the point
where it is cut by a cuspidal tangent passes through the harmonic point of that cuspidal tangent.
The inverse of the parabola from a focus is the cardioid; and the inverse of the corresponding
directrix is the base circle of the cardioid. The cardioid projects into a tricuspidal quartic and its
base circle projects into a conic through the three cusps which has the same general properties as
the base conic of the nodal bicuspidal quartic.
The circle circumscribing the triangle formed by the three tangents to a parabola passes
through the focus. Inverting:—three circles through the cusp, and tangent to a cardioid, intersect
in three collinear points. Projecting:—three conics through the three cusps of a tricuspidal
quartic and touching the quartic intersect in three collinear points. Reciprocating:—if three
conics touch the three inflectional tangents of a nodal cubic and the cubic itself, their three other
common tangents intersect in a point.
Circles described on the focal radii of a parabola as diameters touch the tangent through the
vertex. Inverting and projecting:—from a point on a tricuspidal quartic lines are drawn to the
three cusps and a fourth line forming a harmonic pencil; the envelope of this fourth line is a
conic through the three cusps and touching the quartic at the point where the latter is cut by one
of the cuspidal tangents. There are three such conics, one corresponding to each cusp. At any
cusp the tangent to its corresponding base conic, the cuspidal tangent, and the lines to the other
two cusps form a harmonic pencil. Reciprocating:—on any tangent to a nodal cubic take the
three points of intersection with the inflectional tangents and a fourth point forming with these a
harmonic range; the locus of this fourth point is a conic touching the three inflectional tangents
and the cubic. The tangent to the cubic where it is touched by the conic goes through a point of
inflection. On any inflectional tangent the point of contact of this conic, the point of inflection,
and the points of intersection of the other two inflectional tangents form a harmonic range.
The circle described on any focal chord of a parabola as diameter will touch the directrix.
Inverting:—the circle described on any cuspidal chord of a cardioid will touch the base circle.
Projecting:—through a cusp C draw any chord of a tricuspidal quartic meeting the quartic in P
and O; draw a conic through P, O, and the other two cusps so that the pencil at P formed by the
tangent to the conic and the lines to the cusps is harmonic; all such conics will touch the base
conic of the cusp C. Reciprocating:—from O, on any inflectional tangent of a nodal cubic, draw
two tangents P and Q to the cubic; draw a conic touching the tangents P and Q and the other two
inflectional tangents so that the range on one of these tangents formed by the point of contact of
Page 20
the conic and the intersection of the three inflectional tangent is harmonic; the envelope of all
such conics is a conic touching the three inflectional tangents.
The directrix of a parabola is the locus of the intersection of tangents at right angles to one
another. Inverting and projecting:—through any point P on the base conic of a cusp C of the
tricuspidal quartic, two conics can be drawn through the three cusps and touching the quartic;
their two tangents at P and the lines to the other two cusps form a harmonic pencil; their two
points of contact lie on a line through C. Reciprocating:—from any point on one of the
inflectional tangents to a nodal cubic draw the two tangents P and Q; draw two conics each
touching the cubic and the three inflectional tangents, one touching P and the other Q; the
envelope of their other common tangent is a conic touching the three inflectional tangents; the
two points of contact of any one of these common tangents and the points where it cuts the other
two inflectional tangents form a harmonic range.
Any two parabolas which have a common focus and their axes in opposite directions cut at
right angles. Inverting:—any two cardioids having a common cusp and their axes in opposite
directions cut at right angles. Projecting:—two tricuspidal quartics having common cusps and at
one of the cusps the same cuspidal tangent, but the cusps pointed in opposite directions, cut at
such an angle that the tangents at a point of intersection and the lines to the other two cusps form
a harmonic pencil. Reciprocating:—two nodal cubics have common inflectional tangents and on
one of them the points of inflection common, but the branches of the curve on opposite sides of
the line; any common tangent to the two curves is cut harmonically by the points of contact and
the other two inflectional tangents.
Circles are described on any two focal chords of a parabola as diameters; their common
chord goes through the vertex of the parabola. Inverting:—circles are described on any two
cuspidal chords of a cardioid; the circle through their points of intersection and the cusp goes
also through the vertex of the cardioid. Projecting:—through one of the cusps of a tricuspidal
quartic draw two chords; draw conics through the other two cusps and the extremities of each of
these chords so that the pole of the line joining the other two cusps with respect to each of these
conics is on the corresponding chord; the conic through the points of intersection of these two
conics and the cusps passes also through the point where the cuspidal tangent of the first
mentioned cusp cuts the quartic. Reciprocating:—on one of the inflectional tangents, of a nodal
cubic take two points P and Q; draw a pair of tangents from each of these points to the cubic;
draw two conics each touching a pair of these tangents and the other two inflectional tangents,
so that the polars of the point of intersection of the other two inflectional tangents with respect
to each of those conics pass respectively through P and Q; the conic touching the common
tangents to these two conics and the three inflectional tangents touches also the tangent from the
first mentioned point of inflection to the cubic.
QUARTICS WITH A TRIPLE POINT.
Since a triple point is analytically equivalent to three double points, a quartic with a triple
point is unicursal. Such a quartic is obtained by inverting a unicursal cubic from its node. The
equation of such a cubic may be written
u₂ + u₃ = 0 ,
such conics is a conic touching the three inflectional tangents.
The directrix of a parabola is the locus of the intersection of tangents at right angles to one
another. Inverting and projecting:—through any point P on the base conic of a cusp C of the
tricuspidal quartic, two conics can be drawn through the three cusps and touching the quartic;
their two tangents at P and the lines to the other two cusps form a harmonic pencil; their two
points of contact lie on a line through C. Reciprocating:—from any point on one of the
inflectional tangents to a nodal cubic draw the two tangents P and Q; draw two conics each
touching the cubic and the three inflectional tangents, one touching P and the other Q; the
envelope of their other common tangent is a conic touching the three inflectional tangents; the
two points of contact of any one of these common tangents and the points where it cuts the other
two inflectional tangents form a harmonic range.
Any two parabolas which have a common focus and their axes in opposite directions cut at
right angles. Inverting:—any two cardioids having a common cusp and their axes in opposite
directions cut at right angles. Projecting:—two tricuspidal quartics having common cusps and at
one of the cusps the same cuspidal tangent, but the cusps pointed in opposite directions, cut at
such an angle that the tangents at a point of intersection and the lines to the other two cusps form
a harmonic pencil. Reciprocating:—two nodal cubics have common inflectional tangents and on
one of them the points of inflection common, but the branches of the curve on opposite sides of
the line; any common tangent to the two curves is cut harmonically by the points of contact and
the other two inflectional tangents.
Circles are described on any two focal chords of a parabola as diameters; their common
chord goes through the vertex of the parabola. Inverting:—circles are described on any two
cuspidal chords of a cardioid; the circle through their points of intersection and the cusp goes
also through the vertex of the cardioid. Projecting:—through one of the cusps of a tricuspidal
quartic draw two chords; draw conics through the other two cusps and the extremities of each of
these chords so that the pole of the line joining the other two cusps with respect to each of these
conics is on the corresponding chord; the conic through the points of intersection of these two
conics and the cusps passes also through the point where the cuspidal tangent of the first
mentioned cusp cuts the quartic. Reciprocating:—on one of the inflectional tangents, of a nodal
cubic take two points P and Q; draw a pair of tangents from each of these points to the cubic;
draw two conics each touching a pair of these tangents and the other two inflectional tangents,
so that the polars of the point of intersection of the other two inflectional tangents with respect
to each of those conics pass respectively through P and Q; the conic touching the common
tangents to these two conics and the three inflectional tangents touches also the tangent from the
first mentioned point of inflection to the cubic.
QUARTICS WITH A TRIPLE POINT.
Since a triple point is analytically equivalent to three double points, a quartic with a triple
point is unicursal. Such a quartic is obtained by inverting a unicursal cubic from its node. The
equation of such a cubic may be written
u₂ + u₃ = 0 ,
Page 21
where u₂ and u₃ are homogeneous functions of the second and third degree respectively in x and
y. Hence the equation of the inverse curve is
u₃ + u₂(x² + y²) ,
which shows that the origin is a triple point and the quartic circular. By projecting this all other
forms may be obtained.
The nature of the triple point depends upon the relation of the line at infinity to the cubic
before inversion. Thus the line at infinity may cut the cubic in three distinct points all real, or
one real and two imaginary, in one real and two coincident points (an ordinary tangent), or in
three coincident points (an inflectional tangent). Hence the quartic may have at the triple point
three distinct tangents all real, or one real and two imaginary, one real and two coincident, or all
coincident.
This quartic may be generated in a manner similar to that used for the curves already
discussed. We showed in the section on nodal cubics that a system of conics through A, B, C, D,
and a projective pencil of rays with its vertex at A generate by the intersection of corresponding
elements a cubic with a node at A. Invert the whole figure from A and then project:—the pencil
of rays remains a pencil; the system of conics becomes a system of unicursal cubics having a
common node at A and passing through five other common points; the cubic inverts and projects
into a quartic with a triple point at A, passing through the five other common points of the
system of cubics.
The three points of inflection of a nodal cubic lie on a right line. Inverting:—there are three
points on a circular quartic with a triple point whose osculating circles pass through the triple
point, and these three points lie on a circle through the triple point. Let these three points be
designated by A, B, and C. The lines from the triple point O to the points A, B, C, and the
common chord of the osculating circles at two of them form a harmonic pencil. Through one of
these points, A, and the triple point draw a circle touching the quartic; the point of contact is on
the common chord of the osculating circles at B and C.
From theorems which we have already proved for a system of cubics having a common node
and passing through five others fixed points, we can infer other theorems for a system of
quartics having a common triple point and passing through seven other fixed points. For
example, any conic through the common double point and two of the fixed points is cut by the
cubics in pairs of points which determine at the node a pencil in involution. Hence any cubic
having its node at the common triple point and passing through any four of the fixed points is
cut by the quartics in pairs of points which determine at the common triple point a pencil in
involution. Again, the pairs of tangents to the cubics at the common double point form a pencil
in involution, the two cuspidal tangents being the foci of the pencil. Inverting:—the line at
infinity (which passes through two of the fixed points, i. e. the circular points) cuts the system of
circular quartics in pairs of points in involution. Projecting:—a line through any two of the
seven fixed points cuts the system of quartics in pairs of points in involution. Since the line at
infinity touches the inverse of a cuspidal cubic, it follows that any line through two of the fixed
points will touch two of the quartics of the system; these points of contact are therefore the foci
of the involution.
Other theorems on such a system of quartics will be given in the next section.
y. Hence the equation of the inverse curve is
u₃ + u₂(x² + y²) ,
which shows that the origin is a triple point and the quartic circular. By projecting this all other
forms may be obtained.
The nature of the triple point depends upon the relation of the line at infinity to the cubic
before inversion. Thus the line at infinity may cut the cubic in three distinct points all real, or
one real and two imaginary, in one real and two coincident points (an ordinary tangent), or in
three coincident points (an inflectional tangent). Hence the quartic may have at the triple point
three distinct tangents all real, or one real and two imaginary, one real and two coincident, or all
coincident.
This quartic may be generated in a manner similar to that used for the curves already
discussed. We showed in the section on nodal cubics that a system of conics through A, B, C, D,
and a projective pencil of rays with its vertex at A generate by the intersection of corresponding
elements a cubic with a node at A. Invert the whole figure from A and then project:—the pencil
of rays remains a pencil; the system of conics becomes a system of unicursal cubics having a
common node at A and passing through five other common points; the cubic inverts and projects
into a quartic with a triple point at A, passing through the five other common points of the
system of cubics.
The three points of inflection of a nodal cubic lie on a right line. Inverting:—there are three
points on a circular quartic with a triple point whose osculating circles pass through the triple
point, and these three points lie on a circle through the triple point. Let these three points be
designated by A, B, and C. The lines from the triple point O to the points A, B, C, and the
common chord of the osculating circles at two of them form a harmonic pencil. Through one of
these points, A, and the triple point draw a circle touching the quartic; the point of contact is on
the common chord of the osculating circles at B and C.
From theorems which we have already proved for a system of cubics having a common node
and passing through five others fixed points, we can infer other theorems for a system of
quartics having a common triple point and passing through seven other fixed points. For
example, any conic through the common double point and two of the fixed points is cut by the
cubics in pairs of points which determine at the node a pencil in involution. Hence any cubic
having its node at the common triple point and passing through any four of the fixed points is
cut by the quartics in pairs of points which determine at the common triple point a pencil in
involution. Again, the pairs of tangents to the cubics at the common double point form a pencil
in involution, the two cuspidal tangents being the foci of the pencil. Inverting:—the line at
infinity (which passes through two of the fixed points, i. e. the circular points) cuts the system of
circular quartics in pairs of points in involution. Projecting:—a line through any two of the
seven fixed points cuts the system of quartics in pairs of points in involution. Since the line at
infinity touches the inverse of a cuspidal cubic, it follows that any line through two of the fixed
points will touch two of the quartics of the system; these points of contact are therefore the foci
of the involution.
Other theorems on such a system of quartics will be given in the next section.
Page 22
SYSTEMS OF QUARTICS THROUGH
SIXTEEN POINTS.
Let U and V represent a system of quartics through sixteen points. Since the discriminant of
quartic is of the 27th degree in the coefficients it follows that there are 27 values of k for which
the discriminant vanishes, and hence 27 quartics of the system which have double points. As in
case of cubics these 27 points are called the critic centres of the system. Let the equation of the
system of quartics be written
u₄ + u₃ + u₂ + u₁ + u₀ = 0.
In a manner similar to that employed for cubics, we find the equation of the polar cubics of
the origin with respect to the system to be
u₃ + 2u₂ + 3u₁ + 4u₀ = 0.
The polar conics of the origin are given by
u₂ + 3u₁ + 6u₀ = 0 ;
and the polar lines of the origin, by
u₁ + 4u₀ = 0 .
The origin may be any point in the plane and hence we conclude that only one quartic of the
system passes through a given point and that the polar cubics of any point form a system
through nine points. The polar conics of any point form a system through four points and the
polar lines meet in a point.
If one of the critic centres be taken for origin, we can readily see that such a point is also a
critic centre on each of its systems of polar curves. It is thus at a vertex of the self-polar triangle
of its system of polar conics and the opposite side of the triangle is the common polar line of the
critic centre with respect to each of the systems of curves. The tangents at the node of the nodal
quartic coincide with those of its polar cubic and these we know coincide with the lines which
constitute its polar conic.
If two of the sixteen basal points coincide, such a point is a critic centre. The argument is the
same as for a system of cubics. We can also see that two of the basal points of each of its
systems of polar curves coincide at the critic centre. The sixteen basal points of the system of
quartics may unite two and two so that it is possible to draw a system of quartics touching eight
given lines each at a fixed point.
If three of the basal points of our system of quartics coincide, all the quartics have at such a
point a common point of inflection and a common inflectional tangent. The demonstration is the
same as that already given for cubics. The system of polar cubics of such a point also have this
point for a common point if inflection and the same tangent for a common inflectional tangent. I
prefer to show this analytically for the sake of the method. The equation of the system of
quartics having the origin for a common point of inflection and the axis of y for a common
inflectional tangent may be written
SIXTEEN POINTS.
Let U and V represent a system of quartics through sixteen points. Since the discriminant of
quartic is of the 27th degree in the coefficients it follows that there are 27 values of k for which
the discriminant vanishes, and hence 27 quartics of the system which have double points. As in
case of cubics these 27 points are called the critic centres of the system. Let the equation of the
system of quartics be written
u₄ + u₃ + u₂ + u₁ + u₀ = 0.
In a manner similar to that employed for cubics, we find the equation of the polar cubics of
the origin with respect to the system to be
u₃ + 2u₂ + 3u₁ + 4u₀ = 0.
The polar conics of the origin are given by
u₂ + 3u₁ + 6u₀ = 0 ;
and the polar lines of the origin, by
u₁ + 4u₀ = 0 .
The origin may be any point in the plane and hence we conclude that only one quartic of the
system passes through a given point and that the polar cubics of any point form a system
through nine points. The polar conics of any point form a system through four points and the
polar lines meet in a point.
If one of the critic centres be taken for origin, we can readily see that such a point is also a
critic centre on each of its systems of polar curves. It is thus at a vertex of the self-polar triangle
of its system of polar conics and the opposite side of the triangle is the common polar line of the
critic centre with respect to each of the systems of curves. The tangents at the node of the nodal
quartic coincide with those of its polar cubic and these we know coincide with the lines which
constitute its polar conic.
If two of the sixteen basal points coincide, such a point is a critic centre. The argument is the
same as for a system of cubics. We can also see that two of the basal points of each of its
systems of polar curves coincide at the critic centre. The sixteen basal points of the system of
quartics may unite two and two so that it is possible to draw a system of quartics touching eight
given lines each at a fixed point.
If three of the basal points of our system of quartics coincide, all the quartics have at such a
point a common point of inflection and a common inflectional tangent. The demonstration is the
same as that already given for cubics. The system of polar cubics of such a point also have this
point for a common point if inflection and the same tangent for a common inflectional tangent. I
prefer to show this analytically for the sake of the method. The equation of the system of
quartics having the origin for a common point of inflection and the axis of y for a common
inflectional tangent may be written
Page 23
u₄ + u₃ + { (B + kB₁)xy + (C + kC₁)y² } + (A + kA₁)y = 0 .
The equation of the polar cubics of the origin is therefore,
u₃ + 2{ (B + kB₁)xy + (C + kC₁)y² } + 3(A + kA₁)y = 0 ,
which proves the proposition. The properties of the system of polar conics of such a point are
therefore the same as those already proved for cubics. One quartic of the system has a double
point at the common point of inflection of the others.
When four basal points coincide they give rise either to a common point of undulation or a
common double point on all the quartics of the system. The equation of the system having a
common point of undulation may be written
u₄ + (A + kA₁)x²y + (B + kB₁)xy² + (C + kC₁)y³
+ (D + kD₁)xy + (E + kE₁)y² + (F + kF₁)y = 0 .
There is one value of k for which the last term vanishes, and hence the origin is a critic
centre. The polar cubics of the point of undulation break up into a system of conics through four
points and the common tangent at the common point of undulation. For the equation of the polar
cubics is
y{(A + kA₁)x² + (B + kK₁)xy + (C + kC₁)y²
+ 2(D + kD₁)x + 2(E + kE₁)y + (F + kF₁)} = 0 .
The system of polar conics of the origin consequently breaks up into the line y = 0 and a
pencil meeting in a point. The common tangent at the common point of undulation is also the
common polar line of the point of undulation.
When the four coincident basal points form a common double point on the quartic, it is not
difficult to show that two of the quartics are cuspidal at this point. The polar cubics of the
common double point form a system having the same point for common double point. The
tangents to the quartics at the common node constitute the system of polar conics and form a
pencil in involution. Twelve of the sixteen basal points may unite in three groups of four each
and the system of quartics is then trinodal and passes through four other fixed points. This is the
system obtained by inverting a system of conics through four points and then projecting.
A few special cases should be noticed here. If the four fixed points and two of the nodes lie
on a conic, this conic together with the two lines from the third node to the first two constitute a
quartic of the system. If the four fixed points lie on a line, the quartic then consists of this line
and the sides of the triangle formed by the nodes. If the three nodes and three of the fixed points
lie on a conic, the system of quartics then consists of this conic and a system of conics through
the three nodes and the fourth fixed point. A special case of a system of quartics with three
nodes is a system of cubics having a common node and passing through five other fixed points
together with a line through two of them.
The equation of the polar cubics of the origin is therefore,
u₃ + 2{ (B + kB₁)xy + (C + kC₁)y² } + 3(A + kA₁)y = 0 ,
which proves the proposition. The properties of the system of polar conics of such a point are
therefore the same as those already proved for cubics. One quartic of the system has a double
point at the common point of inflection of the others.
When four basal points coincide they give rise either to a common point of undulation or a
common double point on all the quartics of the system. The equation of the system having a
common point of undulation may be written
u₄ + (A + kA₁)x²y + (B + kB₁)xy² + (C + kC₁)y³
+ (D + kD₁)xy + (E + kE₁)y² + (F + kF₁)y = 0 .
There is one value of k for which the last term vanishes, and hence the origin is a critic
centre. The polar cubics of the point of undulation break up into a system of conics through four
points and the common tangent at the common point of undulation. For the equation of the polar
cubics is
y{(A + kA₁)x² + (B + kK₁)xy + (C + kC₁)y²
+ 2(D + kD₁)x + 2(E + kE₁)y + (F + kF₁)} = 0 .
The system of polar conics of the origin consequently breaks up into the line y = 0 and a
pencil meeting in a point. The common tangent at the common point of undulation is also the
common polar line of the point of undulation.
When the four coincident basal points form a common double point on the quartic, it is not
difficult to show that two of the quartics are cuspidal at this point. The polar cubics of the
common double point form a system having the same point for common double point. The
tangents to the quartics at the common node constitute the system of polar conics and form a
pencil in involution. Twelve of the sixteen basal points may unite in three groups of four each
and the system of quartics is then trinodal and passes through four other fixed points. This is the
system obtained by inverting a system of conics through four points and then projecting.
A few special cases should be noticed here. If the four fixed points and two of the nodes lie
on a conic, this conic together with the two lines from the third node to the first two constitute a
quartic of the system. If the four fixed points lie on a line, the quartic then consists of this line
and the sides of the triangle formed by the nodes. If the three nodes and three of the fixed points
lie on a conic, the system of quartics then consists of this conic and a system of conics through
the three nodes and the fourth fixed point. A special case of a system of quartics with three
nodes is a system of cubics having a common node and passing through five other fixed points
together with a line through two of them.
Page 24
If a fifth basal point be moved up to join the four at the common node, the quartics have one
tangent at the common node common to all. If six basal points coincide they have both tangents
at the node common to all. In this case one of the quartics has a triple point at the common node
of the others. If seven basal points coincide, one of these tangents is an inflectional tangent as
well. If eight points coincide, both are inflectional tangents.
When nine of the basal points of a system of quartics coincide, the quartics have a common
triple point. This is nicely shown by inverting a system of nodal cubics from the common node.
The inverse curves form a system of quartics having a triple point and passing through seven
other fixed points. The common triple point on two quartics counts for nine points of
intersection and the seven others make the requisite sixteen. From our knowledge of a system of
cubics having a common node it is readily inferred that three of the quartics must each break up
into a nodal cubic and a right line through the node. If the seven fixed points of the system of
quartics lie on a cubic having a node at the common triple point, the system of quartics then
consists of this cubic and a pencil of lines through the node. If two of the seven fixed points lie
on a line through the common triple point, the system of quartics then consists of this right line
and a system of cubics through the other five points and having a common node at the common
triple point.
The system of cubics having a common node may have one, two, or three of the other basal
points at infinity; and these may be all distinct or two or three of them coincident. Whence we
infer that if the system of quartics have ten coincident basal points, one of the tangents at the
triple point is common to all the quartics of the system. If eleven basal points coincide, two of
the triple-point tangents are common to all the quartics. If twelve coincide, all three triple-point
tangents are common. These triple-point tangents may be all distinct, two coincident, or all three
coincident.
If thirteen basal points coincide, the system of quartics then consists of the three fixed lines
joining the multiple point to the other three, together with a pencil of lines through the multiple
point. If fourteen points coincide, two lines are fixed and these with any two lines of the pencil
form a quartic of the system. If fifteen points coincide, only one line is fixed and each quartic
consists of this line and any other three of the pencil. When all sixteen points coincide, any four
lines through it form a quartic of the system.
In this paper cubic and quartic curves only are considered. I expect in a future paper to
extend the methods herein developed to curves of still higher degrees. Many of the present
results can be generalized and stated for a unicursal curve of the nth degree. I have purposely
omitted all consideration of focal properties of these curves. There are also many special forms
of interest which do not properly belong to a general treatment of the subject.
NOTE A.
The theorem concerning the three points on a conic A, B, and C, whose osculating circles
pass through a fourth point O on the conic, is due to Steiner. From the properties of the harmonic
polars of the points of inflection on a nodal cubic we may infer many other theorems concerning
the points A, B, and C on a conic. Let the cubic be projected into a circular cubic and then
inverted from the node. Its points of inflection A₁, B₁, C₁ invert into the points A, B, and C. The
harmonic polar of A₁ inverts into the common chord O P of the circles osculating the conic at B
and C; and similarly for the other harmonic polars.
tangent at the common node common to all. If six basal points coincide they have both tangents
at the node common to all. In this case one of the quartics has a triple point at the common node
of the others. If seven basal points coincide, one of these tangents is an inflectional tangent as
well. If eight points coincide, both are inflectional tangents.
When nine of the basal points of a system of quartics coincide, the quartics have a common
triple point. This is nicely shown by inverting a system of nodal cubics from the common node.
The inverse curves form a system of quartics having a triple point and passing through seven
other fixed points. The common triple point on two quartics counts for nine points of
intersection and the seven others make the requisite sixteen. From our knowledge of a system of
cubics having a common node it is readily inferred that three of the quartics must each break up
into a nodal cubic and a right line through the node. If the seven fixed points of the system of
quartics lie on a cubic having a node at the common triple point, the system of quartics then
consists of this cubic and a pencil of lines through the node. If two of the seven fixed points lie
on a line through the common triple point, the system of quartics then consists of this right line
and a system of cubics through the other five points and having a common node at the common
triple point.
The system of cubics having a common node may have one, two, or three of the other basal
points at infinity; and these may be all distinct or two or three of them coincident. Whence we
infer that if the system of quartics have ten coincident basal points, one of the tangents at the
triple point is common to all the quartics of the system. If eleven basal points coincide, two of
the triple-point tangents are common to all the quartics. If twelve coincide, all three triple-point
tangents are common. These triple-point tangents may be all distinct, two coincident, or all three
coincident.
If thirteen basal points coincide, the system of quartics then consists of the three fixed lines
joining the multiple point to the other three, together with a pencil of lines through the multiple
point. If fourteen points coincide, two lines are fixed and these with any two lines of the pencil
form a quartic of the system. If fifteen points coincide, only one line is fixed and each quartic
consists of this line and any other three of the pencil. When all sixteen points coincide, any four
lines through it form a quartic of the system.
In this paper cubic and quartic curves only are considered. I expect in a future paper to
extend the methods herein developed to curves of still higher degrees. Many of the present
results can be generalized and stated for a unicursal curve of the nth degree. I have purposely
omitted all consideration of focal properties of these curves. There are also many special forms
of interest which do not properly belong to a general treatment of the subject.
NOTE A.
The theorem concerning the three points on a conic A, B, and C, whose osculating circles
pass through a fourth point O on the conic, is due to Steiner. From the properties of the harmonic
polars of the points of inflection on a nodal cubic we may infer many other theorems concerning
the points A, B, and C on a conic. Let the cubic be projected into a circular cubic and then
inverted from the node. Its points of inflection A₁, B₁, C₁ invert into the points A, B, and C. The
harmonic polar of A₁ inverts into the common chord O P of the circles osculating the conic at B
and C; and similarly for the other harmonic polars.
Page 25
The pencil O {A B P C} is harmonic. Any circle through A and O meets the conic in S and T
so that the pencil O {A S P T} is harmonic. The two circles through O and tangent to the conic
at S and T intersect on O P. If two circles be drawn through O and A intersecting the conic one in
S and T and the other in U and V, the circles O S U and O T V intersect on O P; so also the
circles O S V and O T U. But one circle can be drawn through O and A and tangent to the conic;
its point of contact is on O P. Let l, m, and n be three points on the conic on a circle through O.
Draw the circles O A l, O A m, and O A n intersecting the conic again in l₁, m₁, n₁; l₁, m₁, n₁, are
also on a circle through O, and the circles through l, m, n and l₁, m₁, n₁ intersect on O P.
NOTE B.
From the fundamental property of the Cissoid of Diocles we can obtain by inversion an
interesting theorem concerning the parabola. In the figure of the Cissoid given in Salmon’s H. P.
C. Art. 214, A M₁ = M R, whence A M₁ = A R - A M; or A R = A M + A M₁. Inverting from the
cusp and representing the inverse points by the same letters, we have for the parabola
1 1 1
——— = ——— + ——— .
AR AM A M₁
This result is interpreted as follows:—draw the circle of curvature at the vertex of a
parabola; this circle is tangent to the ordinate B D which is equal to the abscissa A D; draw a line
through A cutting the circle in R, the ordinate B D in M, and the parabola in M₁; then
1 1 1
——— = ——— + ——— .
AR AM A M₁
Draw the circle with centre at D and radius A D; any chord of the parabola through the
vertex is cut harmonically by the parabola, the circle, and the double ordinate through D.
so that the pencil O {A S P T} is harmonic. The two circles through O and tangent to the conic
at S and T intersect on O P. If two circles be drawn through O and A intersecting the conic one in
S and T and the other in U and V, the circles O S U and O T V intersect on O P; so also the
circles O S V and O T U. But one circle can be drawn through O and A and tangent to the conic;
its point of contact is on O P. Let l, m, and n be three points on the conic on a circle through O.
Draw the circles O A l, O A m, and O A n intersecting the conic again in l₁, m₁, n₁; l₁, m₁, n₁, are
also on a circle through O, and the circles through l, m, n and l₁, m₁, n₁ intersect on O P.
NOTE B.
From the fundamental property of the Cissoid of Diocles we can obtain by inversion an
interesting theorem concerning the parabola. In the figure of the Cissoid given in Salmon’s H. P.
C. Art. 214, A M₁ = M R, whence A M₁ = A R - A M; or A R = A M + A M₁. Inverting from the
cusp and representing the inverse points by the same letters, we have for the parabola
1 1 1
——— = ——— + ——— .
AR AM A M₁
This result is interpreted as follows:—draw the circle of curvature at the vertex of a
parabola; this circle is tangent to the ordinate B D which is equal to the abscissa A D; draw a line
through A cutting the circle in R, the ordinate B D in M, and the parabola in M₁; then
1 1 1
——— = ——— + ——— .
AR AM A M₁
Draw the circle with centre at D and radius A D; any chord of the parabola through the
vertex is cut harmonically by the parabola, the circle, and the double ordinate through D.
Page 26
Foreign Settlements in Kansas.
A CONTRIBUTION TO DIALECT
STUDY IN THE STATE.
Explanatory.—Some years ago when the subject of dialect study in
Kansas, or rather of Kansas dialect, was mentioned, Mr. Noble Prentis, a
gentleman who is warranted in speaking with authority on Kansas, was
inclined to think that he settled the question in short order by declaring that
there is no Kansas dialect. Probably the majority of intelligent citizens of
the state would turn off the subject with the same reply. In the sense of a
mode of speech common to the inhabitants of Kansas and peculiar to them,
Mr. Prentis was indeed right. There is no vocabulary, at least no extensive
vocabulary, by which the native of Kansas may be recognized in the
American Babel. We have no distinctive pronunciation by which we may be
known from the inhabitants of Nebraska or set apart from the citizens of
Missouri. The verb fails to agree with its subject and the participle is
deprived of its final ‘g’ with about equal frequency in Western Kansas and
Eastern Colorado.
But in the same sense it is true that there is no Kansas flora, no Kansas
fauna; that is, there is no plant and there is no animal found quite generally
in Kansas and found nowhere outside of Kansas. The remark that there is no
such thing as a Kansas dialect rests upon a misapprehension of what is
meant by the term. In just the same way that we speak of the flora and the
fauna of Kansas we may speak of the dialect of Kansas. Yet to avoid
popular misapprehension it may be better to speak of dialect in Kansas,
rather than of Kansas dialect.
Dialect study involves the observation and description of all facts
concerning the natural living speech of men, and especially those points in
which the speech of individuals or groups differs from that of the standard
literary language as represented in classic writers and classic speakers.
Standard literary English is always a little behind the times. It is the stuffed
and mounted specimen in the museum. Dialect is the live animal on its
A CONTRIBUTION TO DIALECT
STUDY IN THE STATE.
Explanatory.—Some years ago when the subject of dialect study in
Kansas, or rather of Kansas dialect, was mentioned, Mr. Noble Prentis, a
gentleman who is warranted in speaking with authority on Kansas, was
inclined to think that he settled the question in short order by declaring that
there is no Kansas dialect. Probably the majority of intelligent citizens of
the state would turn off the subject with the same reply. In the sense of a
mode of speech common to the inhabitants of Kansas and peculiar to them,
Mr. Prentis was indeed right. There is no vocabulary, at least no extensive
vocabulary, by which the native of Kansas may be recognized in the
American Babel. We have no distinctive pronunciation by which we may be
known from the inhabitants of Nebraska or set apart from the citizens of
Missouri. The verb fails to agree with its subject and the participle is
deprived of its final ‘g’ with about equal frequency in Western Kansas and
Eastern Colorado.
But in the same sense it is true that there is no Kansas flora, no Kansas
fauna; that is, there is no plant and there is no animal found quite generally
in Kansas and found nowhere outside of Kansas. The remark that there is no
such thing as a Kansas dialect rests upon a misapprehension of what is
meant by the term. In just the same way that we speak of the flora and the
fauna of Kansas we may speak of the dialect of Kansas. Yet to avoid
popular misapprehension it may be better to speak of dialect in Kansas,
rather than of Kansas dialect.
Dialect study involves the observation and description of all facts
concerning the natural living speech of men, and especially those points in
which the speech of individuals or groups differs from that of the standard
literary language as represented in classic writers and classic speakers.
Standard literary English is always a little behind the times. It is the stuffed
and mounted specimen in the museum. Dialect is the live animal on its
Page 27
native heath. Most people, indeed, will think that their speech does not
differ materially from standard English. They say, “We speak near enough
alike ‘for practical purposes’. But a thousand years hence the pronunciation
of our country may have changed so much that it will seem like another
language, and our descendants will write learned theses to prove that we
pronounced ‘cough’ like cow or like cuff. A new language will have grown
out of an old one, but no one know how it came about. Careful dialect study
will help explain it.”
Kansas is a peculiarly favorable field for dialect study. We have here
side by side representatives from nearly every state in the Union, and from
a dozen foreign countries. The observer has here what elsewhere he must
travel over half the world to find. In a district where the people are all
natives, the speech is so nearly homogeneous that it is difficult to find any
one who recognizes the peculiarities of his own language, but here the
contrast of strange tongues strikes us immediately and we become
conscious early of the fact that all men do not speak alike.
Study of dialect may be classified under the heads of pronunciation,
grammar and vocabulary. Of these the last two are the easiest, and may be
carried on by almost any one with pleasure and valuable results.
Pronunciation is the most difficult of these matters to study, as competent
observation and reports can be made only by one who has made a thorough
study of Phonetics. To those who might wish to take up the study of this
branch of the subject, Sweet’s Primer of Phonetics, and Grandgent’s “Vowel
Measurements” and “German and English Sounds” are recommended.
In the study of dialect vocabularies it may become of the greatest
importance to establish the exact locality of a word and the origin of the
persons by whom it is used. For instance, in a family of my acquaintance
the word ‘slandering’ = sauntering was familiar. It was a great puzzle to me
until I learned that some of the children had been in the care of a German
maid. The German word ‘schlendern’ suggested the unquestionable source
of the peculiar word. As a source of information regarding the origin of the
foreign elements of our population when their native speech shall have been
forgotten, but when the influence of it will be left in vocabulary and
pronunciation I have thought that a map of the state with the location of all
the foreign settlements of even quite small size would be of interest and in
time of great value. In the following pages I transmit the results of my
differ materially from standard English. They say, “We speak near enough
alike ‘for practical purposes’. But a thousand years hence the pronunciation
of our country may have changed so much that it will seem like another
language, and our descendants will write learned theses to prove that we
pronounced ‘cough’ like cow or like cuff. A new language will have grown
out of an old one, but no one know how it came about. Careful dialect study
will help explain it.”
Kansas is a peculiarly favorable field for dialect study. We have here
side by side representatives from nearly every state in the Union, and from
a dozen foreign countries. The observer has here what elsewhere he must
travel over half the world to find. In a district where the people are all
natives, the speech is so nearly homogeneous that it is difficult to find any
one who recognizes the peculiarities of his own language, but here the
contrast of strange tongues strikes us immediately and we become
conscious early of the fact that all men do not speak alike.
Study of dialect may be classified under the heads of pronunciation,
grammar and vocabulary. Of these the last two are the easiest, and may be
carried on by almost any one with pleasure and valuable results.
Pronunciation is the most difficult of these matters to study, as competent
observation and reports can be made only by one who has made a thorough
study of Phonetics. To those who might wish to take up the study of this
branch of the subject, Sweet’s Primer of Phonetics, and Grandgent’s “Vowel
Measurements” and “German and English Sounds” are recommended.
In the study of dialect vocabularies it may become of the greatest
importance to establish the exact locality of a word and the origin of the
persons by whom it is used. For instance, in a family of my acquaintance
the word ‘slandering’ = sauntering was familiar. It was a great puzzle to me
until I learned that some of the children had been in the care of a German
maid. The German word ‘schlendern’ suggested the unquestionable source
of the peculiar word. As a source of information regarding the origin of the
foreign elements of our population when their native speech shall have been
forgotten, but when the influence of it will be left in vocabulary and
pronunciation I have thought that a map of the state with the location of all
the foreign settlements of even quite small size would be of interest and in
time of great value. In the following pages I transmit the results of my
Page 28
inquiries so far as received. It is my intention to make the report complete
and to publish the map, when as complete as it can be made, in colors.
Unexpected difficulties have delayed the work and prevented its being
complete. I depended for my information upon the County Superintendents
of the State, a class of unusually intelligent and well-informed men and
women. But in not a few cases there seems to have been a suspicion in the
mind of my correspondent that I might be a special officer of the state
trying to locate violations of the law requiring district schools to be
conducted in English, and hence information regarding schools in foreign
tongue was withheld or given but partially. And in some cases my
informants were not well posted. A superintendent by the name of
Schauermann in a county containing a town called Suabia, tells me that
there are no foreigners in his county. In such cases time must be taken to
secure a correct result.
The questions asked were: Locate, and give origin, date and
approximate numbers of any settlements—six or more families—of
foreigners in your county. Do they still use their language to any extent? Do
they have church service and schools conducted in their native tongue? In
many replies one or more of these points was neglected so that the
information is not yet by any means what I desire to make it. However, for
the purpose of dialect study approximate correctness in location is of chief
importance, and accuracy as to numbers quite secondary.
Through the aid of ministers and others to whom I have been referred
by the superintendents I hope to make this report complete in the following
respects: The more exact limits of the settlement; the numbers of those
foreign-born; the province as well as land from which they came; the
number of churches; the number of schools and the length of time the same
are conducted. I solicit the co-operation of everyone interested in this work,
and also in the whole subject of dialect study. As intimated above,
interested observers can without especial training do a service to science
and at the same time find a fascinating pastime for themselves by making
collections of words and constructions which they believe to be unusual or
new. If any such are sent to the writer they will be duly acknowledged.
They should in every case be accompanied by a statement of the age,
condition and birth-place of the person using them.
and to publish the map, when as complete as it can be made, in colors.
Unexpected difficulties have delayed the work and prevented its being
complete. I depended for my information upon the County Superintendents
of the State, a class of unusually intelligent and well-informed men and
women. But in not a few cases there seems to have been a suspicion in the
mind of my correspondent that I might be a special officer of the state
trying to locate violations of the law requiring district schools to be
conducted in English, and hence information regarding schools in foreign
tongue was withheld or given but partially. And in some cases my
informants were not well posted. A superintendent by the name of
Schauermann in a county containing a town called Suabia, tells me that
there are no foreigners in his county. In such cases time must be taken to
secure a correct result.
The questions asked were: Locate, and give origin, date and
approximate numbers of any settlements—six or more families—of
foreigners in your county. Do they still use their language to any extent? Do
they have church service and schools conducted in their native tongue? In
many replies one or more of these points was neglected so that the
information is not yet by any means what I desire to make it. However, for
the purpose of dialect study approximate correctness in location is of chief
importance, and accuracy as to numbers quite secondary.
Through the aid of ministers and others to whom I have been referred
by the superintendents I hope to make this report complete in the following
respects: The more exact limits of the settlement; the numbers of those
foreign-born; the province as well as land from which they came; the
number of churches; the number of schools and the length of time the same
are conducted. I solicit the co-operation of everyone interested in this work,
and also in the whole subject of dialect study. As intimated above,
interested observers can without especial training do a service to science
and at the same time find a fascinating pastime for themselves by making
collections of words and constructions which they believe to be unusual or
new. If any such are sent to the writer they will be duly acknowledged.
They should in every case be accompanied by a statement of the age,
condition and birth-place of the person using them.
Page 29
I wish here to call attention to the work of the American Dialect Society
which exists to promote this study. It desires as wide a membership as
possible, and membership is open to all interested in the subject. The
publication of the Society, Dialect Notes, contains reports of word-lists and
other studies, and will be an aid to any who wish to undertake similar work.
Subscriptions and membership fees should be sent to Mr. C. H. Grandgent,
Treas., Cambridge, Mass.
REPORTS BY COUNTIES.
Atchison.—Reports no foreigners, by John
Klopfenstein, Supt.
Allen.—Swedes and Danes, from 600 to 700,
settled from 1873 to 1880. Have church
service, and four to five months school in
Swedish. Grove and Elsmore townships.
Germans in and around Humboldt.
Anderson.—Irish in Reeder township, 1860 and
1874. Germans, 1860 in Putman
township, 1880 in Westphalia township.
Have both church and schools in German.
Barber.—Reports “no foreigners worth making
account of”, by J. O. Hahn, Sup’t.
Barton.—No report.
Bourbon.—Reports no foreigners.
Brown.—No report.
Butler.—Germans (Prussians), speaking Low
German, in Fairmount and Milton
townships. Hold church services but no
schools in German.
Chase.—Russian Mennonites, speaking both
Russian and German, in Diamond Creek
township, no church, but a portion of
which exists to promote this study. It desires as wide a membership as
possible, and membership is open to all interested in the subject. The
publication of the Society, Dialect Notes, contains reports of word-lists and
other studies, and will be an aid to any who wish to undertake similar work.
Subscriptions and membership fees should be sent to Mr. C. H. Grandgent,
Treas., Cambridge, Mass.
REPORTS BY COUNTIES.
Atchison.—Reports no foreigners, by John
Klopfenstein, Supt.
Allen.—Swedes and Danes, from 600 to 700,
settled from 1873 to 1880. Have church
service, and four to five months school in
Swedish. Grove and Elsmore townships.
Germans in and around Humboldt.
Anderson.—Irish in Reeder township, 1860 and
1874. Germans, 1860 in Putman
township, 1880 in Westphalia township.
Have both church and schools in German.
Barber.—Reports “no foreigners worth making
account of”, by J. O. Hahn, Sup’t.
Barton.—No report.
Bourbon.—Reports no foreigners.
Brown.—No report.
Butler.—Germans (Prussians), speaking Low
German, in Fairmount and Milton
townships. Hold church services but no
schools in German.
Chase.—Russian Mennonites, speaking both
Russian and German, in Diamond Creek
township, no church, but a portion of
Page 30
schooling in German. Germans at Strong
City, with both church and schools in their
native tongue.
Chatauqua.—Some Norwegians and Swedes,
1870, no location given. Neither schools
nor churches in native tongue. One colony
of ‘Russians’ (Mennonites?), who have
also given up their language.
Cherokee.—Weir City, French and Italians,
number considerable. Scammon, Scotch,
also in large numbers. The French and
Italians have neither schools nor church in
the native tongue. Germans in Ross,
twenty families; with church originally
Lutheran, now Mennonite; school
irregularly during past ten years. Swedes,
a few families in Cherokee township,
have entirely given up Swedish language.
The Scotch, French and Italians in mines
or mining industries.
Cheyenne.—Germans settled in 1885-86 on
Hackberry Creek, 160 persons; in the
northeast corner of the county, 100; on
west border of county, north of
Republican river, 120; all with churches
and the last two with occasional schools.
Swedes are across the Republican
adjoining last named German settlement,
120, entered 1886, having neither church
nor school in Swedish.
Clarke.—Reports no foreigners.
Clay.—No report.
Cloud.—Canadian French are scattered over
much of the county, with considerable
City, with both church and schools in their
native tongue.
Chatauqua.—Some Norwegians and Swedes,
1870, no location given. Neither schools
nor churches in native tongue. One colony
of ‘Russians’ (Mennonites?), who have
also given up their language.
Cherokee.—Weir City, French and Italians,
number considerable. Scammon, Scotch,
also in large numbers. The French and
Italians have neither schools nor church in
the native tongue. Germans in Ross,
twenty families; with church originally
Lutheran, now Mennonite; school
irregularly during past ten years. Swedes,
a few families in Cherokee township,
have entirely given up Swedish language.
The Scotch, French and Italians in mines
or mining industries.
Cheyenne.—Germans settled in 1885-86 on
Hackberry Creek, 160 persons; in the
northeast corner of the county, 100; on
west border of county, north of
Republican river, 120; all with churches
and the last two with occasional schools.
Swedes are across the Republican
adjoining last named German settlement,
120, entered 1886, having neither church
nor school in Swedish.
Clarke.—Reports no foreigners.
Clay.—No report.
Cloud.—Canadian French are scattered over
much of the county, with considerable
Page 31
settlements in and around the towns of
Concordia, Clyde, St. Joseph and Aurora.
In all there are churches, in the first three
schools also conducted in French.
Norwegians occupy portions of Sibley
and Lincoln townships with two churches
in their own tongue. They number about
three hundred. Irish occupy portions of
Solomon and Lyon, the south part of
Meredith and the southeast corner of
Grant townships.
Coffey.—Germans in Liberty and on border of
Leroy and Avon township. Have church
service in German.
Comanche.—Germans. A few scattered families.
Cowley.—A few Swedes and Germans, widely
scattered.
Crawford.—Irish and French in Grant
township; Swedes in west part of
Sherman township, have all given up their
language. Italians, Austrians and other
nationalities in south part of Washington,
southeast part of Sheridan and all over
Baker township, especially in Pittsburg,
employed in mining and smelting.
Decatur.—Swedes in Oberlin township;
Mennonites in Prairie Dog township;
Germans in and around Dresden, with
Catholic church; Bohemians in Jennings
and Garfield townships.
Dickinson.—Germans, 500 in number settled in
1860 in Liberty, Union and Lyon
townships. Have three churches and two
schools in German. Also in Wheatland,
Concordia, Clyde, St. Joseph and Aurora.
In all there are churches, in the first three
schools also conducted in French.
Norwegians occupy portions of Sibley
and Lincoln townships with two churches
in their own tongue. They number about
three hundred. Irish occupy portions of
Solomon and Lyon, the south part of
Meredith and the southeast corner of
Grant townships.
Coffey.—Germans in Liberty and on border of
Leroy and Avon township. Have church
service in German.
Comanche.—Germans. A few scattered families.
Cowley.—A few Swedes and Germans, widely
scattered.
Crawford.—Irish and French in Grant
township; Swedes in west part of
Sherman township, have all given up their
language. Italians, Austrians and other
nationalities in south part of Washington,
southeast part of Sheridan and all over
Baker township, especially in Pittsburg,
employed in mining and smelting.
Decatur.—Swedes in Oberlin township;
Mennonites in Prairie Dog township;
Germans in and around Dresden, with
Catholic church; Bohemians in Jennings
and Garfield townships.
Dickinson.—Germans, 500 in number settled in
1860 in Liberty, Union and Lyon
townships. Have three churches and two
schools in German. Also in Wheatland,
Page 32
Jefferson, Bonner and Ridge townships,
one church and a school. Swedes, 100
settled in 1860 in Center and Hayes
township, with two churches and one
school in Swedish. Irish, several hundred
in south part of Banner township.
Doniphan.—Germans in Wayne, Marion and
southern part of Center, Burr Oak and
Washington townships, with church
service in native tongue. Norwegians in
eastern part of Wolf River township.
Douglas.—There are German settlements in
Eudora township (300), Marion township
(600), and Big Springs township (100),
with churches in all and school in the first.
There are about five hundred Germans in
Lawrence, with three German churches.
There are smaller settlements of Germans
and Scandinavians at several points in the
county.
Edwards.—Germans and Swedes in Kinsley,
Jackson and Trenton townships, have
church service in their mother tongue.
Elk.—Swedes in Painter and Hood townships;
Irish in Falls township; Germans on the
border of Elk and Wild Cat townships.
None of these have church or school in
the native tongue, but all use it at home.
Ellis.—Germans from Russia, settled about
1876 in Catherine, Hartsook, Lookout,
Wheatland and Freedom townships, about
3000 in number—one third of the
population of the county in 1891. They
are Catholics, and have both churches and
one church and a school. Swedes, 100
settled in 1860 in Center and Hayes
township, with two churches and one
school in Swedish. Irish, several hundred
in south part of Banner township.
Doniphan.—Germans in Wayne, Marion and
southern part of Center, Burr Oak and
Washington townships, with church
service in native tongue. Norwegians in
eastern part of Wolf River township.
Douglas.—There are German settlements in
Eudora township (300), Marion township
(600), and Big Springs township (100),
with churches in all and school in the first.
There are about five hundred Germans in
Lawrence, with three German churches.
There are smaller settlements of Germans
and Scandinavians at several points in the
county.
Edwards.—Germans and Swedes in Kinsley,
Jackson and Trenton townships, have
church service in their mother tongue.
Elk.—Swedes in Painter and Hood townships;
Irish in Falls township; Germans on the
border of Elk and Wild Cat townships.
None of these have church or school in
the native tongue, but all use it at home.
Ellis.—Germans from Russia, settled about
1876 in Catherine, Hartsook, Lookout,
Wheatland and Freedom townships, about
3000 in number—one third of the
population of the county in 1891. They
are Catholics, and have both churches and
Page 33
parochial schools conducted in German.
They are large wheat-growers.
Ellsworth.—Germans, (Methodists) in south
part of Valley township; Germans
(Lutherans) in north part of Columbia and
Ellsworth townships; Germans (Baptists)
from Prussia, in Green Garden and south
west corner of Empire townships. These
all have church service, and the Lutherans
schools in their own tongue. Bohemians
in Valley and Noble townships.
Finney.—Reports no foreigners.
Ford.—Germans in Wheatland and Speareville
townships. Have church, and one school
conducted in German.
Franklin.—No report.
Garfield.—A few scattered families of
Germans.
Geary.—Irish (Connaught) came into Jackson,
Jefferson and Liberty townships 1855,
about 1500 in number. Germans (Anhalt)
about 1500 came into Jefferson, Milford
and Lyon townships in 1862. About 300
English from Sussex settled in Lyon
township in 1870. The Germans maintain
both churches and schools in German.
Gove.—Swedes in Lewis and south part of
Grinnell and south west corner of Gove
townships.
Graham.—A settlement of Canadian French
(600) was made in adjacent parts of Wild
Horse and Morelan townships about 1880.
They conduct church service but no
schools in French.
They are large wheat-growers.
Ellsworth.—Germans, (Methodists) in south
part of Valley township; Germans
(Lutherans) in north part of Columbia and
Ellsworth townships; Germans (Baptists)
from Prussia, in Green Garden and south
west corner of Empire townships. These
all have church service, and the Lutherans
schools in their own tongue. Bohemians
in Valley and Noble townships.
Finney.—Reports no foreigners.
Ford.—Germans in Wheatland and Speareville
townships. Have church, and one school
conducted in German.
Franklin.—No report.
Garfield.—A few scattered families of
Germans.
Geary.—Irish (Connaught) came into Jackson,
Jefferson and Liberty townships 1855,
about 1500 in number. Germans (Anhalt)
about 1500 came into Jefferson, Milford
and Lyon townships in 1862. About 300
English from Sussex settled in Lyon
township in 1870. The Germans maintain
both churches and schools in German.
Gove.—Swedes in Lewis and south part of
Grinnell and south west corner of Gove
townships.
Graham.—A settlement of Canadian French
(600) was made in adjacent parts of Wild
Horse and Morelan townships about 1880.
They conduct church service but no
schools in French.
Page 34
Grant.—Reports no foreigners.
Gray.—Reports no foreigners.
Greeley.—Swedes in the north west part of the
county, have church service and summer
school in Swedish.
Greenwood.—Norwegians, about 200, in south
part of Salem township, have church in
their own tongue. Germans in Shell Rock
township, about 300, also have church in
their own language.
Hamilton.—Reports no foreigners.
Harper.—Germans about the town of Harper.
Hungarians south of Bluff City. Both have
church service in German. About 100
French in Odell and Stohrville townships.
Harvey.—Germans (Russian Mennonites) from
Odessa, a few from Prussia, the latter
speaking Low German. They settled from
1874 to 1876 in Alta and Garden
townships, in Pleasant and the eastern part
of Newton townships, and about Halstead.
They have church and school in German,
but speak Russian also. French in north
part of Emma township, engaged in
raising silk worms.
Haskell.—Reports no foreigners.
Hodgman.—Germans, about 30 families, settled
about 1884 in south east corner of Sterling
township; have preaching in German.
Swedes in north west corner of Marena
township.
Jackson.—Danes in Netawaca and Whiting
townships; Irish in Washington township;
Gray.—Reports no foreigners.
Greeley.—Swedes in the north west part of the
county, have church service and summer
school in Swedish.
Greenwood.—Norwegians, about 200, in south
part of Salem township, have church in
their own tongue. Germans in Shell Rock
township, about 300, also have church in
their own language.
Hamilton.—Reports no foreigners.
Harper.—Germans about the town of Harper.
Hungarians south of Bluff City. Both have
church service in German. About 100
French in Odell and Stohrville townships.
Harvey.—Germans (Russian Mennonites) from
Odessa, a few from Prussia, the latter
speaking Low German. They settled from
1874 to 1876 in Alta and Garden
townships, in Pleasant and the eastern part
of Newton townships, and about Halstead.
They have church and school in German,
but speak Russian also. French in north
part of Emma township, engaged in
raising silk worms.
Haskell.—Reports no foreigners.
Hodgman.—Germans, about 30 families, settled
about 1884 in south east corner of Sterling
township; have preaching in German.
Swedes in north west corner of Marena
township.
Jackson.—Danes in Netawaca and Whiting
townships; Irish in Washington township;
Page 35
neither continue to use their native
tongue.
Jefferson.—Germans (Swiss) in Delaware,
Jefferson and Kentucky townships,
maintaining church but no schools in
German.
Jewell.—Swedes, widely scattered in Sinclair,
Allen, Ewing and Ezbon townships.
Johnson.—No report.
Kearney.—No report.
Kingman.—A small settlement of Germans in
Peters township, not using German to any
extent. A few Irish in Union township.
Kiowa.—No report.
Labette.—Swedes and Norwegians settled in
Valley and Canada townships about 1869.
Still speak their language, but have
neither church nor school in it.
Lane.—Reports no foreigners.
Leavenworth.—German, in 1873 in Easton
township; in Fair township in 1876; about
600 in each place. They have church
service and schools in German.
Lincoln.—Danes settled in Grant township in
1869 and since, 400 in number. Germans
settled in Pleasant township in 1872, with
300, and in Indiana township in 1869 and
later with about 375. Danes and Germans
have good schools and churches in native
tongue. Bohemians in Highland township
in 1878 with thirty families. They speak
their native tongue, but have no schools or
churches.
tongue.
Jefferson.—Germans (Swiss) in Delaware,
Jefferson and Kentucky townships,
maintaining church but no schools in
German.
Jewell.—Swedes, widely scattered in Sinclair,
Allen, Ewing and Ezbon townships.
Johnson.—No report.
Kearney.—No report.
Kingman.—A small settlement of Germans in
Peters township, not using German to any
extent. A few Irish in Union township.
Kiowa.—No report.
Labette.—Swedes and Norwegians settled in
Valley and Canada townships about 1869.
Still speak their language, but have
neither church nor school in it.
Lane.—Reports no foreigners.
Leavenworth.—German, in 1873 in Easton
township; in Fair township in 1876; about
600 in each place. They have church
service and schools in German.
Lincoln.—Danes settled in Grant township in
1869 and since, 400 in number. Germans
settled in Pleasant township in 1872, with
300, and in Indiana township in 1869 and
later with about 375. Danes and Germans
have good schools and churches in native
tongue. Bohemians in Highland township
in 1878 with thirty families. They speak
their native tongue, but have no schools or
churches.
Page 36
Linn.—Reports no foreigners.
Logan.—Swedes, about 200, about Page City, in
north part of county. Have church and
school both in Swedish.
Lyon.—Welsh, between 1000 and 1500 are
located in and about Emporia, with three
churches conducted in Welsh. There is a
settlement of Scandinavians near Olpe in
Centre township.
Marion.—Germans (Russian Mennonites),
settled in Logan, Durham, Lehigh, Risley,
Menno, West Branch and Liberty
townships, from 1870 to 1875, some 5000
in number. They speak both Russian and
German, and have church service and
schools in the latter tongue. Bohemians,
about 500 in number are settled in Clark
township. They speak Czech and have
church service in that language. French to
the number of 200 settled soon after 1870
on the border of Grant and Doyle
townships. They speak French still, but
have no schools or church service in the
language.
Marshall.—Germans (Pommeranians,
Hanoverians, Frisians) to the number of
2000, settled in the west part of
Marysville township from before 1860 to
1870. They have both church and school
in their own tongue. In the north part of
Murray and the south half of Vermillion
townships are 1200 Irish, who use only
English in church and school. They came
before 1870. Bohemians in small numbers
occupy the north part of Guittard,the north
Logan.—Swedes, about 200, about Page City, in
north part of county. Have church and
school both in Swedish.
Lyon.—Welsh, between 1000 and 1500 are
located in and about Emporia, with three
churches conducted in Welsh. There is a
settlement of Scandinavians near Olpe in
Centre township.
Marion.—Germans (Russian Mennonites),
settled in Logan, Durham, Lehigh, Risley,
Menno, West Branch and Liberty
townships, from 1870 to 1875, some 5000
in number. They speak both Russian and
German, and have church service and
schools in the latter tongue. Bohemians,
about 500 in number are settled in Clark
township. They speak Czech and have
church service in that language. French to
the number of 200 settled soon after 1870
on the border of Grant and Doyle
townships. They speak French still, but
have no schools or church service in the
language.
Marshall.—Germans (Pommeranians,
Hanoverians, Frisians) to the number of
2000, settled in the west part of
Marysville township from before 1860 to
1870. They have both church and school
in their own tongue. In the north part of
Murray and the south half of Vermillion
townships are 1200 Irish, who use only
English in church and school. They came
before 1870. Bohemians in small numbers
occupy the north part of Guittard,the north
Page 37
west corner of Waterville and the south
part of Blue Rapids townships; Swedes a
portion of the south part of Waterville
township. No report as to their language.
Meade.—No report.
Miami.—Germans occupy the north part of Wea
and the west part of Valley townships,
about 200 in each settlement; the first has
a Catholic, the second a Lutheran church.
Irish occupy the north part of Osage
township, also about 200 in number.
Mitchell.—Germans to the number of 1200
occupy Pittsburg, Blue Hill, and Carr
Creek townships. In the first there is a
church, and a well-attended school
(Catholic) at Tipton.
Montgomery.—Germans to the number of 100
are settled in and about Independence.
They have church service in German
(Lutheran).
Morris.—Swedes occupy Diamond Valley, the
west part of Creek, and the north part of
Parker townships. They have several
churches and occasionally a school
conducted in Swedish.
Morton.—Reports no foreigners.
McPherson.—Swedes settled, about 1870, in
Union, Smoky Hill, Harper, New
Gottland, Delmore, and portions of other
townships, in large numbers, several
thousand. They have several churches and
excellent schools conducted in Swedish.
Germans (Russian Mennonites) occupy
Superior, Turkey Creek, Mound, Lone
part of Blue Rapids townships; Swedes a
portion of the south part of Waterville
township. No report as to their language.
Meade.—No report.
Miami.—Germans occupy the north part of Wea
and the west part of Valley townships,
about 200 in each settlement; the first has
a Catholic, the second a Lutheran church.
Irish occupy the north part of Osage
township, also about 200 in number.
Mitchell.—Germans to the number of 1200
occupy Pittsburg, Blue Hill, and Carr
Creek townships. In the first there is a
church, and a well-attended school
(Catholic) at Tipton.
Montgomery.—Germans to the number of 100
are settled in and about Independence.
They have church service in German
(Lutheran).
Morris.—Swedes occupy Diamond Valley, the
west part of Creek, and the north part of
Parker townships. They have several
churches and occasionally a school
conducted in Swedish.
Morton.—Reports no foreigners.
McPherson.—Swedes settled, about 1870, in
Union, Smoky Hill, Harper, New
Gottland, Delmore, and portions of other
townships, in large numbers, several
thousand. They have several churches and
excellent schools conducted in Swedish.
Germans (Russian Mennonites) occupy
Superior, Turkey Creek, Mound, Lone
Page 38
Tree, King City, and portions of
McPherson and other southern townships,
with several churches and schools. The
Mennonites number about 5000 and
settled after 1876.
Nemaha.—Germans (Swiss) occupy Nemaha
and Washington, and a portion of
Richmond townships, with German
churches and schools. Irish are in Clear
Creek and north east corner of Neuchatel
townships. Most of Neuchatel township is
occupied by French (Swiss).
Neosho.—Germans have a considerable
settlement in the south east corner of
Tioga township, with church service
(Lutheran) in German; another in the east
part of Lincoln township, where the
language is spoken, but without church or
school. Swedes have settlements in the
north west part of Tioga and the east part
of Big Creek townships; church in the
first only, though in both Swedish is
spoken almost exclusively.
Ness.—No report.
Norton.—Germans to the number of 100 settled
about 1880 in Grant township. They have
church service in German.
Osage.—Swedes, (700 in number,) settled in
Grant township in 1871, where they have
four churches conducted in Swedish.
Welsh settled in 1869 in Arvonia
township, and others in the north part of
Superior township, 700 in number. They
have six churches with services in Welsh.
Germans are in the north part of Scranton
McPherson and other southern townships,
with several churches and schools. The
Mennonites number about 5000 and
settled after 1876.
Nemaha.—Germans (Swiss) occupy Nemaha
and Washington, and a portion of
Richmond townships, with German
churches and schools. Irish are in Clear
Creek and north east corner of Neuchatel
townships. Most of Neuchatel township is
occupied by French (Swiss).
Neosho.—Germans have a considerable
settlement in the south east corner of
Tioga township, with church service
(Lutheran) in German; another in the east
part of Lincoln township, where the
language is spoken, but without church or
school. Swedes have settlements in the
north west part of Tioga and the east part
of Big Creek townships; church in the
first only, though in both Swedish is
spoken almost exclusively.
Ness.—No report.
Norton.—Germans to the number of 100 settled
about 1880 in Grant township. They have
church service in German.
Osage.—Swedes, (700 in number,) settled in
Grant township in 1871, where they have
four churches conducted in Swedish.
Welsh settled in 1869 in Arvonia
township, and others in the north part of
Superior township, 700 in number. They
have six churches with services in Welsh.
Germans are in the north part of Scranton
Page 39
and Ridgway townships, 200 in number;
French in the central part of Superior
township, 200 strong; Danes, 200, in
north part of Melvern and Olivet
townships; a considerable number of
Scotch and Irish in and near Scranton.
Most of these latter are engaged in coal
mining. None of the foreigners have
schools—except Sunday schools—in their
native tongue.
Osborne.—Germans settled in Bloom township,
where they have both church and school
in their mother tongue.
Ottawa.—Bohemians are located about the
border of Sheridan and Fountain
townships; Danes in the south part of
Buckeye township; Irish, arrived about
1885, in the south part of Chapman
township. None of these have church or
school in a foreign tongue.
Pawnee.—Swedes settled about 1877 in the west
part of Garfield and the north part of
Walnut townships, about 500 in all. They
speak their native language at home
almost exclusively, and have preaching in
it.
Phillips.—Germans occupy Mound and south
part of Dayton townships, with preaching
and parochial school in German. Dutch
occupy east part of Prairie View with
adjacent portions of Long Island, Dayton,
and Beaver townships, with preaching in
Dutch. Some Danes and Swedes in
Crystal township, and some scattered
Poles.
French in the central part of Superior
township, 200 strong; Danes, 200, in
north part of Melvern and Olivet
townships; a considerable number of
Scotch and Irish in and near Scranton.
Most of these latter are engaged in coal
mining. None of the foreigners have
schools—except Sunday schools—in their
native tongue.
Osborne.—Germans settled in Bloom township,
where they have both church and school
in their mother tongue.
Ottawa.—Bohemians are located about the
border of Sheridan and Fountain
townships; Danes in the south part of
Buckeye township; Irish, arrived about
1885, in the south part of Chapman
township. None of these have church or
school in a foreign tongue.
Pawnee.—Swedes settled about 1877 in the west
part of Garfield and the north part of
Walnut townships, about 500 in all. They
speak their native language at home
almost exclusively, and have preaching in
it.
Phillips.—Germans occupy Mound and south
part of Dayton townships, with preaching
and parochial school in German. Dutch
occupy east part of Prairie View with
adjacent portions of Long Island, Dayton,
and Beaver townships, with preaching in
Dutch. Some Danes and Swedes in
Crystal township, and some scattered
Poles.
Page 40
Pottawatomie.—Germans, about 2500, in west
half of Mill Creek and adjacent portions
of Sherman and Vienna townships, also in
Pottawatomie and adjacent portions of
Union, Louisville, and St. George
townships. There are a few families in
Wamego and St. Mary’s Mission. They
have several schools and churches
conducted in German. Swedes occupy the
whole of Blue Valley and the west border
of Greene townships, and have a small
settlement in St. Mary township,
numbering in all 1200. They have church
service and a parochial school conducted
in Swedish. Irish, to the number of 2000
occupy Clear Creek, Emmet, St. Mary and
the border of St. Clere townships. French
(Canadian), numbering 200, are found in
the north part of Mill Creek and in Union
townships, also a few about St. Mary’s
Mission.
Pratt.—Reports no foreigners.
Rawlins.—Germans in north east part of county
with church and school in German.
Swedes in east part of county, Bohemians
and Hungarians in north and north east
portion.
Reno.—Germans, about 300, came in 1880 to
north east corner of Little River township,
and about 200 to south east corner of
Sumner township; also a settlement in the
west part of Hayes township; Dutch,
about 350, came 1878 into Haven
township; Russians are settled in Salt
Creek and Medford townships. All have
church service and schools in their native
half of Mill Creek and adjacent portions
of Sherman and Vienna townships, also in
Pottawatomie and adjacent portions of
Union, Louisville, and St. George
townships. There are a few families in
Wamego and St. Mary’s Mission. They
have several schools and churches
conducted in German. Swedes occupy the
whole of Blue Valley and the west border
of Greene townships, and have a small
settlement in St. Mary township,
numbering in all 1200. They have church
service and a parochial school conducted
in Swedish. Irish, to the number of 2000
occupy Clear Creek, Emmet, St. Mary and
the border of St. Clere townships. French
(Canadian), numbering 200, are found in
the north part of Mill Creek and in Union
townships, also a few about St. Mary’s
Mission.
Pratt.—Reports no foreigners.
Rawlins.—Germans in north east part of county
with church and school in German.
Swedes in east part of county, Bohemians
and Hungarians in north and north east
portion.
Reno.—Germans, about 300, came in 1880 to
north east corner of Little River township,
and about 200 to south east corner of
Sumner township; also a settlement in the
west part of Hayes township; Dutch,
about 350, came 1878 into Haven
township; Russians are settled in Salt
Creek and Medford townships. All have
church service and schools in their native
Page 41
tongue. There are also a few French and
Danes in the county.
Republic.—No report.
Rice.—There is a considerable settlement of
Germans in Valley township, also
Pennsylvania Germans in the west part of
Sterling township, with German churches
in both. There are also some Germans in
the town of Lyons, with a German church.
Riley.—Swedes, about 2500, occupy Jackson,
Swede Creek and adjacent portions of
Mayday, Center, Fancy Creek and
Sherman townships. They have church
services and summer schools in their own
tongue. Bohemians and Germans, about
500 together, occupy the north east part of
Swede Creek township.
Rooks.—Germans, 10 families, settled 1880 in
north part of Northhampton township.
Bohemians, 10 families, located in north
part of Logan township in 1879. French,
about 30 families, south west corner of
Logan, and same number in Twin Mound
township, settled in 1878, speak French
and have preaching in that tongue. The
Germans have church service in German.
Rush.—Germans (Russian Mennonites) are
located as follows: in Big Timber
township 75 families, in Illinois township
25 families, in Pioneer township 50
families, in Lone Star township 50
families, in Banner township 25 families,
in Garfield township 25 families, in Belle
Prairie township 30 families. In each
township there is one church or more, but
Danes in the county.
Republic.—No report.
Rice.—There is a considerable settlement of
Germans in Valley township, also
Pennsylvania Germans in the west part of
Sterling township, with German churches
in both. There are also some Germans in
the town of Lyons, with a German church.
Riley.—Swedes, about 2500, occupy Jackson,
Swede Creek and adjacent portions of
Mayday, Center, Fancy Creek and
Sherman townships. They have church
services and summer schools in their own
tongue. Bohemians and Germans, about
500 together, occupy the north east part of
Swede Creek township.
Rooks.—Germans, 10 families, settled 1880 in
north part of Northhampton township.
Bohemians, 10 families, located in north
part of Logan township in 1879. French,
about 30 families, south west corner of
Logan, and same number in Twin Mound
township, settled in 1878, speak French
and have preaching in that tongue. The
Germans have church service in German.
Rush.—Germans (Russian Mennonites) are
located as follows: in Big Timber
township 75 families, in Illinois township
25 families, in Pioneer township 50
families, in Lone Star township 50
families, in Banner township 25 families,
in Garfield township 25 families, in Belle
Prairie township 30 families. In each
township there is one church or more, but
Page 42
no German schools (?). Bohemians are
found in Banner and Garfield townships,
about 25 families in each.
Russell.—No report.
Saline.—Germans, (Bavarians and Swabians)
about 200, in Gypsum and south part of
Ohio townships; Swedes, 3000 to 4000, in
Washington, Smolan, Falun, Liberty and
Smoky View, and adjacent parts of Spring
Creek, Summit and Walnut townships,
also in Salina. The Swedes came in 1868.
Both Germans and Swedes have
preaching and the latter have schools in
their tongue.
Scott.—No report.
Sedgwick.—Germans, 3000 to 4000, settled
from 1874-82 in Sherman, Grand River,
Garden Plain, Attica and Union
townships. Also about 2000 Germans in
the city of Wichita. In both places schools
and churches in German. Russians,
Italians, French and Scandinavians are
represented, a few hundred each, in
Wichita. In the country townships a few
Dutch and Swedes.
Seward.—Reports no foreigners.
Shawnee.—Germans (Moravians) in Rossville
township, speak their native tongue
almost exclusively, but have neither
school nor preaching in German.
Sheridan.—No reports.
Sherman.—Germans, 20 families about the
center of the county. Swedes, 10 families
in north east corner and 25 families in
found in Banner and Garfield townships,
about 25 families in each.
Russell.—No report.
Saline.—Germans, (Bavarians and Swabians)
about 200, in Gypsum and south part of
Ohio townships; Swedes, 3000 to 4000, in
Washington, Smolan, Falun, Liberty and
Smoky View, and adjacent parts of Spring
Creek, Summit and Walnut townships,
also in Salina. The Swedes came in 1868.
Both Germans and Swedes have
preaching and the latter have schools in
their tongue.
Scott.—No report.
Sedgwick.—Germans, 3000 to 4000, settled
from 1874-82 in Sherman, Grand River,
Garden Plain, Attica and Union
townships. Also about 2000 Germans in
the city of Wichita. In both places schools
and churches in German. Russians,
Italians, French and Scandinavians are
represented, a few hundred each, in
Wichita. In the country townships a few
Dutch and Swedes.
Seward.—Reports no foreigners.
Shawnee.—Germans (Moravians) in Rossville
township, speak their native tongue
almost exclusively, but have neither
school nor preaching in German.
Sheridan.—No reports.
Sherman.—Germans, 20 families about the
center of the county. Swedes, 10 families
in north east corner and 25 families in
Page 43
south west corner. Both Germans and
Swedes have schools and preaching in
their native tongue.
Smith.—Germans in west part of Swan and
Cedar townships, and on border of Harvey
and Banner townships, in both churches,
and in the first schools, in German. Dutch,
in the south half of Lincoln township,
have church but no schools.
Stafford.—Germans in Hayes and Cooper
townships, three hundred in number, with
two churches having service in German.
Stanton.—A few scattered Germans.
Stevens.—No report.
Sumner.—No report.
Thomas.—A few foreigners scattered about the
country; all anglicised.
Trego.—No report.
Wabaunsee.—Germans and some Swedes in
Kaw, Newbury, Mill, Farmer, Alma and
Washington townships, with both
preaching and schools in the mother
tongue.
Wallace.—Swedes, to the number of 300, have
settled since 1888 in the south west corner
of the county. They have church and
schools in Swedish.
Washington.—Germans in Franklin,
Charleston, Hanover and north part of
Sherman townships, have both church and
schools (6) conducted in German.
Bohemians are numerous in Little Blue
township; French about midway in
Swedes have schools and preaching in
their native tongue.
Smith.—Germans in west part of Swan and
Cedar townships, and on border of Harvey
and Banner townships, in both churches,
and in the first schools, in German. Dutch,
in the south half of Lincoln township,
have church but no schools.
Stafford.—Germans in Hayes and Cooper
townships, three hundred in number, with
two churches having service in German.
Stanton.—A few scattered Germans.
Stevens.—No report.
Sumner.—No report.
Thomas.—A few foreigners scattered about the
country; all anglicised.
Trego.—No report.
Wabaunsee.—Germans and some Swedes in
Kaw, Newbury, Mill, Farmer, Alma and
Washington townships, with both
preaching and schools in the mother
tongue.
Wallace.—Swedes, to the number of 300, have
settled since 1888 in the south west corner
of the county. They have church and
schools in Swedish.
Washington.—Germans in Franklin,
Charleston, Hanover and north part of
Sherman townships, have both church and
schools (6) conducted in German.
Bohemians are numerous in Little Blue
township; French about midway in
Page 44
Sherman township; Irish in Barnes, south
part of Sherman and Koloko townships.
Wichita.—No report.
Wilson.—Swedes have settled since 1870 in
Colfax township. They have preaching but
no schools in Swedish.
Woodson.—No report.
Wyandotte.—Germans, 150, in north west
corner of Prairie township; Swedes, 350,
in Kansas City, Kas.; both have church
service in the native language. Welsh,
200, in Rosedale, and Irish about midway
in Wyandotte township.
SUMMARIES.
There are German settlements of thirty or more
persons in the following counties: Allen, Anderson,
Butler, Chase, Chautauqua, Cherokee, Cheyenne,
Coffey, Comanche, Cowley, Crawford, Decatur,
Dickinson, Doniphan, Douglas, Edwards, Elk, Ellis,
Ellsworth, Ford, Garfield, Geary, Greenwood,
Harper, Harvey, Hodgeman, Jefferson, Kingman,
Leavenworth, Lincoln, Marion, Marshall, Miami,
Mitchell, Montgomery, McPherson, Nemaha,
Neosho, Norton, Osage, Osborne, Phillips,
Pottawatomie, Rawlins, Reno, Rice, Riley, Rooks,
Rush, Saline, Sedgwick, Shawnee, Sherman, Smith,
Stafford, Stanton, Thomas, Wabaunsee, Washington,
Wyandotte.
Total, 60.
Scandinavians in settlements of thirty or over are
found in: Allen, Chautauqua, Cherokee, Cheyenne,
part of Sherman and Koloko townships.
Wichita.—No report.
Wilson.—Swedes have settled since 1870 in
Colfax township. They have preaching but
no schools in Swedish.
Woodson.—No report.
Wyandotte.—Germans, 150, in north west
corner of Prairie township; Swedes, 350,
in Kansas City, Kas.; both have church
service in the native language. Welsh,
200, in Rosedale, and Irish about midway
in Wyandotte township.
SUMMARIES.
There are German settlements of thirty or more
persons in the following counties: Allen, Anderson,
Butler, Chase, Chautauqua, Cherokee, Cheyenne,
Coffey, Comanche, Cowley, Crawford, Decatur,
Dickinson, Doniphan, Douglas, Edwards, Elk, Ellis,
Ellsworth, Ford, Garfield, Geary, Greenwood,
Harper, Harvey, Hodgeman, Jefferson, Kingman,
Leavenworth, Lincoln, Marion, Marshall, Miami,
Mitchell, Montgomery, McPherson, Nemaha,
Neosho, Norton, Osage, Osborne, Phillips,
Pottawatomie, Rawlins, Reno, Rice, Riley, Rooks,
Rush, Saline, Sedgwick, Shawnee, Sherman, Smith,
Stafford, Stanton, Thomas, Wabaunsee, Washington,
Wyandotte.
Total, 60.
Scandinavians in settlements of thirty or over are
found in: Allen, Chautauqua, Cherokee, Cheyenne,
Page 45
Cloud, Cowley, Crawford, Decatur, Dickinson,
Doniphan, Edwards, Elk, Gove, Greeley,
Greenwood, Hodgeman, Jackson, Jewell, Labette,
Lincoln, Logan, Lyon, Marshall, Morris, McPherson,
Neosho, Osage, Ottawa, Pawnee, Phillips,
Pottawatomie, Rawlins, Riley, Saline, Sedgwick,
Sherman, Wabaunsee, Wallace, Wilson, Wyandotte.
Total, 40.
Settlements of Slavonic peoples, Bohemians,
Poles, Russians, or Hungarians, in: Decatur,
Ellsworth, Harper, Lincoln, Marshall, Ottawa,
Phillips, Rawlins, Reno, Riley, Rooks, Rush,
Sedgwick, Washington.
Total, 14.
Settlements of Irish have been made in:
Anderson, Cloud, Crawford, Dickinson, Doniphan,
Elk, Geary, Jackson, Kingman, Marshall, Miami,
Nemaha, Osage, Ottawa, Pottawatomie, Washington,
Wyandotte.
Total, 17.
French are found in settlements of thirty or more
in: Cherokee, Cloud, Crawford, Doniphan, Graham,
Harper, Harvey, Nemaha, Osage, Pottawatomie,
Rooks, Sedgwick, Washington.
Total, 13.
Italians are in Cherokee, Crawford, Sedgwick.
Total, 3.
Welsh in Lyon, Osage and Wyandotte.
Total, 3.
Doniphan, Edwards, Elk, Gove, Greeley,
Greenwood, Hodgeman, Jackson, Jewell, Labette,
Lincoln, Logan, Lyon, Marshall, Morris, McPherson,
Neosho, Osage, Ottawa, Pawnee, Phillips,
Pottawatomie, Rawlins, Riley, Saline, Sedgwick,
Sherman, Wabaunsee, Wallace, Wilson, Wyandotte.
Total, 40.
Settlements of Slavonic peoples, Bohemians,
Poles, Russians, or Hungarians, in: Decatur,
Ellsworth, Harper, Lincoln, Marshall, Ottawa,
Phillips, Rawlins, Reno, Riley, Rooks, Rush,
Sedgwick, Washington.
Total, 14.
Settlements of Irish have been made in:
Anderson, Cloud, Crawford, Dickinson, Doniphan,
Elk, Geary, Jackson, Kingman, Marshall, Miami,
Nemaha, Osage, Ottawa, Pottawatomie, Washington,
Wyandotte.
Total, 17.
French are found in settlements of thirty or more
in: Cherokee, Cloud, Crawford, Doniphan, Graham,
Harper, Harvey, Nemaha, Osage, Pottawatomie,
Rooks, Sedgwick, Washington.
Total, 13.
Italians are in Cherokee, Crawford, Sedgwick.
Total, 3.
Welsh in Lyon, Osage and Wyandotte.
Total, 3.
Page 46
Dutch in Phillips, Reno, Sedgwick.
Total, 3.
Scotch are reported from Cherokee and Osage.
Total, 2.
English in Geary and Doniphan.
Total, 2.
The following counties report that there are no
settlements of people of foreign birth within their
borders: Atchison, Barber, Bourbon, Clarke, Finney,
Grant, Gray, Hamilton, Haskell, Lane, Linn, Morton,
Pratt, Seward.
Total, 14.
No reports have been secured from the following
counties: Barton, Brown, Clay, Franklin, Johnson,
Kearney, Kiowa, Meade, Ness, Republic, Russell,
Scott, Sheridan, Stevens, Sumner, Trego, Wichita,
Woodson.
Total, 18.
Seventy-four of our Kansas counties report
settlements of citizens of foreign birth in numbers
above 30. In so many cases there is no report or
estimate of numbers that it is not worth while to give
summaries. Probably there are not actually ten
counties that have not such settlements.
Church services in a foreign tongue are held as
follows: Allen S.,[4] Anderson G., Butler G., Chase
G., Cheyenne G., Cherokee G., Cloud F. S., Coffey
G., Decatur G., Dickinson G. S., Doniphan G.,
Douglas G., Edwards G. S., Ellis G., Ellsworth G.,
Ford G., Geary G., Graham F., Greeley S.,
Total, 3.
Scotch are reported from Cherokee and Osage.
Total, 2.
English in Geary and Doniphan.
Total, 2.
The following counties report that there are no
settlements of people of foreign birth within their
borders: Atchison, Barber, Bourbon, Clarke, Finney,
Grant, Gray, Hamilton, Haskell, Lane, Linn, Morton,
Pratt, Seward.
Total, 14.
No reports have been secured from the following
counties: Barton, Brown, Clay, Franklin, Johnson,
Kearney, Kiowa, Meade, Ness, Republic, Russell,
Scott, Sheridan, Stevens, Sumner, Trego, Wichita,
Woodson.
Total, 18.
Seventy-four of our Kansas counties report
settlements of citizens of foreign birth in numbers
above 30. In so many cases there is no report or
estimate of numbers that it is not worth while to give
summaries. Probably there are not actually ten
counties that have not such settlements.
Church services in a foreign tongue are held as
follows: Allen S.,[4] Anderson G., Butler G., Chase
G., Cheyenne G., Cherokee G., Cloud F. S., Coffey
G., Decatur G., Dickinson G. S., Doniphan G.,
Douglas G., Edwards G. S., Ellis G., Ellsworth G.,
Ford G., Geary G., Graham F., Greeley S.,
Page 47
Greenwood G. S., Harper G. Hung., Harvey G.,
Hodgeman G., Jefferson G., Leavenworth G.,
Lincoln G. Du., Logan S., Lyon W. G., Marion G.
Boh., Marshall G., Miami G., Mitchell G.,
Montgomery G., Morris S., McPherson S. G.,
Nemaha G., Neosho G. S., Norton G., Osage S.
Welsh, Osborne G., Pawnee S., Phillips G. Du.,
Pottawatomie G. S., Rawlins G., Reno G. Du. Rus.,
Rice G., Riley S., Rooks F. G., Rush G., Saline G. S.,
Sedgwick G., Sherman G. S., Smith G. Du., Stafford
G., Wabaunsee G., Wallace S., Washington G.
Wilson S., Wyandotte G. S.
Total, 58.
This total of fifty-eight counties in which church
service is held in a foreign tongue does not at all
indicate the number of such churches. In many of the
reports received the number is not given, or merely
in the plural. These very incomplete reports indicate
one hundred thirty-eight such churches; it is safe to
say that the number is nearly double this.
More interesting is the number of schools
conducted in a foreign tongue. The counties having
them are: Allen S., Anderson G., Chase G.,
Cheyenne G., Cherokee, G., Cloud F., Dickinson G.
S., Douglas G., Ellis G., Ellsworth G., Ford G.,
Geary G., Greeley S., Harvey G., Leavenworth G.,
Lincoln G. S., Logan S., Marion G., Marshall G.,
Mitchell G., Morris S., McPherson S. G., Nemaha
G., Osborne G., Phillips G., Pottawatomie G. S.,
Rawlins G., Reno G. Du. Rus., Riley S., Rush G.,
Saline S., Sedgwick G., Sherman G. S., Smith G.
Du., Wabaunsee G., Wallace S., Washington G.
Total, 37.
Hodgeman G., Jefferson G., Leavenworth G.,
Lincoln G. Du., Logan S., Lyon W. G., Marion G.
Boh., Marshall G., Miami G., Mitchell G.,
Montgomery G., Morris S., McPherson S. G.,
Nemaha G., Neosho G. S., Norton G., Osage S.
Welsh, Osborne G., Pawnee S., Phillips G. Du.,
Pottawatomie G. S., Rawlins G., Reno G. Du. Rus.,
Rice G., Riley S., Rooks F. G., Rush G., Saline G. S.,
Sedgwick G., Sherman G. S., Smith G. Du., Stafford
G., Wabaunsee G., Wallace S., Washington G.
Wilson S., Wyandotte G. S.
Total, 58.
This total of fifty-eight counties in which church
service is held in a foreign tongue does not at all
indicate the number of such churches. In many of the
reports received the number is not given, or merely
in the plural. These very incomplete reports indicate
one hundred thirty-eight such churches; it is safe to
say that the number is nearly double this.
More interesting is the number of schools
conducted in a foreign tongue. The counties having
them are: Allen S., Anderson G., Chase G.,
Cheyenne G., Cherokee, G., Cloud F., Dickinson G.
S., Douglas G., Ellis G., Ellsworth G., Ford G.,
Geary G., Greeley S., Harvey G., Leavenworth G.,
Lincoln G. S., Logan S., Marion G., Marshall G.,
Mitchell G., Morris S., McPherson S. G., Nemaha
G., Osborne G., Phillips G., Pottawatomie G. S.,
Rawlins G., Reno G. Du. Rus., Riley S., Rush G.,
Saline S., Sedgwick G., Sherman G. S., Smith G.
Du., Wabaunsee G., Wallace S., Washington G.
Total, 37.
Page 48
The number of separate schools in a foreign
language so far as reported is seventy-four, and here,
too, it is safe to say that the actual number is much
larger.
EXPLANATION.
The spaces indicating settlements are in many cases too small to admit a
complete description of the inhabitants, and accordingly they have been
marked by races rather than by nationalities and tribes. “German” is made
to do duty for all inhabitants of Germany whether Low or High, as well as
for Austrians, German Swiss, and Russo-German Mennonites. The last are
reported simply as Mennonites, but are, I believe, in all cases of German
origin. “Scandinavian” is used instead of Swede, Norwegian and Dane,
because in some cases the distinction was not made in the reports, and in
order to limit the number of colors on the map which is to come. In the case
of Scotch I have been unable to secure information whether they are
Highlanders or Lowlanders, and in case of Irish, to what extent, if at all,
they speak the old Irish language.
W. H. Carruth.
language so far as reported is seventy-four, and here,
too, it is safe to say that the actual number is much
larger.
EXPLANATION.
The spaces indicating settlements are in many cases too small to admit a
complete description of the inhabitants, and accordingly they have been
marked by races rather than by nationalities and tribes. “German” is made
to do duty for all inhabitants of Germany whether Low or High, as well as
for Austrians, German Swiss, and Russo-German Mennonites. The last are
reported simply as Mennonites, but are, I believe, in all cases of German
origin. “Scandinavian” is used instead of Swede, Norwegian and Dane,
because in some cases the distinction was not made in the reports, and in
order to limit the number of colors on the map which is to come. In the case
of Scotch I have been unable to secure information whether they are
Highlanders or Lowlanders, and in case of Irish, to what extent, if at all,
they speak the old Irish language.
W. H. Carruth.
Page 49
A PRELIMINARY MAP OF FOREIGN
SETTLEMENTS IN KANSAS.
B - Bohemians (in a few cases other Slavs) G - Germans (including Dutch and Russian
Mennonites)
S - Scandinavians (Danes, Swedes and Norwegians) I - Irish W - Welsh It - Italians F - French
H - Hungarians
SETTLEMENTS IN KANSAS.
B - Bohemians (in a few cases other Slavs) G - Germans (including Dutch and Russian
Mennonites)
S - Scandinavians (Danes, Swedes and Norwegians) I - Irish W - Welsh It - Italians F - French
H - Hungarians
Page 50
The Great Spirit Spring Mound.
BY E. H. S. BAILEY.
The “Waconda” or Great Spirit Spring, which is situated in Mitchell
County, Kansas, about two miles east of Cawker City, has been described in
detail by G. E. Patrick in vol. vii, p. 22, Transactions of the Kansas
Academy of Science. An analysis of the water, and of the rock forming the
mound on which the spring is located, is also given.
The spring is upon a conical, limestone mound 42 feet in height, and
150 feet in diameter at the top. The pool itself is a nearly circular lake about
50 feet in diameter, 35 feet deep, and the water rises to within a few inches
of the top of the basin. There is a level space on all sides of the spring so
wide that a carriage can be readily driven around it.
There is but little indication of organic matter in the water of the large
spring, though there is a slimy white deposit adhering to the bottom and
sides, but the water is colorless, clear, and transparent. The excess of water,
instead of overflowing the bank, escapes by numerous small fissures, from
10 to 20 feet down on the sides, especially on the side away from the bluff.
In these lateral springs there is an abundance of green algæ, and a whitish
scum, which seems to be detached from the bottom and to float to the
surface. This has a slimy, granular feeling suggesting in a very marked
manner hydrated silica.
The mound is situated within about 200 feet of a limestone bluff, which
rises perhaps 20 feet above the level of the spring. The natural inference
would be that the harder material of the mound protected it from the erosion
which carried away the rock in the valley of the Solomon on the south, and
the rock between the spring and the bluff.
Is it not possible however that the mound has been really made by the
successive deposits from the spring? Although the mound is plainly
stratified, this need not interfere with the theory, for the water may have
been intermittent in its flow. The rock is very porous, and on being ground
to a thin section is shown to be concretionary in structure.
BY E. H. S. BAILEY.
The “Waconda” or Great Spirit Spring, which is situated in Mitchell
County, Kansas, about two miles east of Cawker City, has been described in
detail by G. E. Patrick in vol. vii, p. 22, Transactions of the Kansas
Academy of Science. An analysis of the water, and of the rock forming the
mound on which the spring is located, is also given.
The spring is upon a conical, limestone mound 42 feet in height, and
150 feet in diameter at the top. The pool itself is a nearly circular lake about
50 feet in diameter, 35 feet deep, and the water rises to within a few inches
of the top of the basin. There is a level space on all sides of the spring so
wide that a carriage can be readily driven around it.
There is but little indication of organic matter in the water of the large
spring, though there is a slimy white deposit adhering to the bottom and
sides, but the water is colorless, clear, and transparent. The excess of water,
instead of overflowing the bank, escapes by numerous small fissures, from
10 to 20 feet down on the sides, especially on the side away from the bluff.
In these lateral springs there is an abundance of green algæ, and a whitish
scum, which seems to be detached from the bottom and to float to the
surface. This has a slimy, granular feeling suggesting in a very marked
manner hydrated silica.
The mound is situated within about 200 feet of a limestone bluff, which
rises perhaps 20 feet above the level of the spring. The natural inference
would be that the harder material of the mound protected it from the erosion
which carried away the rock in the valley of the Solomon on the south, and
the rock between the spring and the bluff.
Is it not possible however that the mound has been really made by the
successive deposits from the spring? Although the mound is plainly
stratified, this need not interfere with the theory, for the water may have
been intermittent in its flow. The rock is very porous, and on being ground
to a thin section is shown to be concretionary in structure.
Page 51
An analysis of the water of the spring (loc. cit.) showed that it contained
over 1120 grains of mineral matter per gallon, of which 775 grains were
sodium chloride and 206 grains sodium sulphate, with 66 grains of
magnesium sulphate, 41 grains of magnesium carbonate, and 31 grains of
calcium carbonate. An analysis by the author shows that there are 0.874
grains of silica.
Samples of the rock composing the mound, and of the adjoining bluff
were secured, and comparative analyses made, with the following results:
GREAT
COUNTRY
SPIRIT
ROCK.
MOUND.
Silica and insoluble residue 2.14 4.10
Oxides of Iron and Alumina [5] 2.66
3.22
Sulphuric Anhydride .00 0.34
Carbon Dioxide 40.90 39.10
Calcium Oxide 51.90 49.28
Magnesium Oxide 0.63 1.15
Water and organic matter, undetermined [6] 3.37
1.21
100.00 100.00
Specific gravity 2.52 2.79
The rocks are entirely different in appearance and structure, that of the
mound being twice as hard as that of the bluff. The former contains much
organic matter as is shown by blackening when it is heated in a tube and
giving off the characteristic odor. The iron is practically of the ferrous
variety, probably combined with carbonic acid, and the rock contains traces
of chlorides. The particular sample taken was at some distance from the
spring, and had been thoroughly exposed to the weather.
The rock of the mound is of just such a character as might have been
built up by deposition from the water, as it contains the least soluble
constituents of the water. The process of solidification would have been
assisted by the silica in the water, forming insoluble cementing silicates, as
over 1120 grains of mineral matter per gallon, of which 775 grains were
sodium chloride and 206 grains sodium sulphate, with 66 grains of
magnesium sulphate, 41 grains of magnesium carbonate, and 31 grains of
calcium carbonate. An analysis by the author shows that there are 0.874
grains of silica.
Samples of the rock composing the mound, and of the adjoining bluff
were secured, and comparative analyses made, with the following results:
GREAT
COUNTRY
SPIRIT
ROCK.
MOUND.
Silica and insoluble residue 2.14 4.10
Oxides of Iron and Alumina [5] 2.66
3.22
Sulphuric Anhydride .00 0.34
Carbon Dioxide 40.90 39.10
Calcium Oxide 51.90 49.28
Magnesium Oxide 0.63 1.15
Water and organic matter, undetermined [6] 3.37
1.21
100.00 100.00
Specific gravity 2.52 2.79
The rocks are entirely different in appearance and structure, that of the
mound being twice as hard as that of the bluff. The former contains much
organic matter as is shown by blackening when it is heated in a tube and
giving off the characteristic odor. The iron is practically of the ferrous
variety, probably combined with carbonic acid, and the rock contains traces
of chlorides. The particular sample taken was at some distance from the
spring, and had been thoroughly exposed to the weather.
The rock of the mound is of just such a character as might have been
built up by deposition from the water, as it contains the least soluble
constituents of the water. The process of solidification would have been
assisted by the silica in the water, forming insoluble cementing silicates, as
Page 52
noticed by Prof. Patrick. The analysis given above shows that there is
abundant silica in the water for this purpose.
Mention has been made of the organic growth in the adjacent springs.
The mixed scum on being heated changes from a dull green to a vivid
grass-green, and if ignited it swells up and emits an ill-smelling vapor,
which is evidently nitrogenous in its character. A grayish white ash is left,
which contains much carbonate of lime. This is evidently freshly deposited,
as it is entangled in the algæ in granular lumps.
A specimen of the white scum, noticed above, only slightly mixed with
the green algæ, was analyzed. The acid solution of the ash contains 1.26 per
cent of soluble silica. This was of course a combined silica, probably
calcium silicate, which becomes the cementing material in the rock. In
another sample of ash, after removing all the substances soluble in hot
water, the residue was found to contain 76.46 per cent of silica.
The siliceous residue from the scum was examined by Dr. S. W.
Williston. It consists mostly of diatoms. He recognized
Navicula— 2 species
Nitzschia— 2 species
Asteronella— 1 species.
All three genera are found both in fresh and salt or brackish water.
The green material consists essentially of Oscillaria and Confervæ. If
the scum is allowed to stand for a short time a very strong sulphuretted odor
is developed, strangely suggestive of salt water marshes or mud flats; and
indeed the same odor is noticed in the vicinity of the spring. No
characteristic salt water organisms, that should occasion this peculiar odor
have, however, yet been observed here. A more extended and special study
of the organic life of these interior salt water marshes and springs would be
of great interest.
abundant silica in the water for this purpose.
Mention has been made of the organic growth in the adjacent springs.
The mixed scum on being heated changes from a dull green to a vivid
grass-green, and if ignited it swells up and emits an ill-smelling vapor,
which is evidently nitrogenous in its character. A grayish white ash is left,
which contains much carbonate of lime. This is evidently freshly deposited,
as it is entangled in the algæ in granular lumps.
A specimen of the white scum, noticed above, only slightly mixed with
the green algæ, was analyzed. The acid solution of the ash contains 1.26 per
cent of soluble silica. This was of course a combined silica, probably
calcium silicate, which becomes the cementing material in the rock. In
another sample of ash, after removing all the substances soluble in hot
water, the residue was found to contain 76.46 per cent of silica.
The siliceous residue from the scum was examined by Dr. S. W.
Williston. It consists mostly of diatoms. He recognized
Navicula— 2 species
Nitzschia— 2 species
Asteronella— 1 species.
All three genera are found both in fresh and salt or brackish water.
The green material consists essentially of Oscillaria and Confervæ. If
the scum is allowed to stand for a short time a very strong sulphuretted odor
is developed, strangely suggestive of salt water marshes or mud flats; and
indeed the same odor is noticed in the vicinity of the spring. No
characteristic salt water organisms, that should occasion this peculiar odor
have, however, yet been observed here. A more extended and special study
of the organic life of these interior salt water marshes and springs would be
of great interest.
Page 53
On Pascal’s Limaçon
and the Cardioid.
BY H. C. RIGGS.
The inverse of a conic with respect to a focus is a curve called Pascal’s
Limaçon. From the polar equation of a conic, the focus being the pole, it is
evident that the polar equation of the limaçon may be written in the form:
e 1
r = — cosx + — ;
p p
where e and p are constants, being respectively the eccentricity and semi-
latus rectum of the conic.
From the above equation it is readily seen that the curve may be traced
by drawing from a fixed point O on a circle any number of chords and
laying off a constant length on each of these lines, measured from the
circumference of the circle. The point O is the node of the limaçon; and the
fixed circle, which I shall call the base circle, is the inverse of the directrix
of the conic. This is readily shown as follows:—the polar equation of the
directrix is r = p / (e cosx). Hence the equation of its inverse is r = (e
cosx) / p, which is the equation of the base circle of the limaçon.
If the conic which we invert be an ellipse, the point O will be an acnode
on the Limaçon; if the conic be a hyperbola, the point O is a crunode. If the
conic be a parabola, O is then a cusp and the inverse curve is called the
Cardioid.
The limaçon may also be traced as a roulette.
Let the circle A C have a diameter just twice that of the circle A B. Then
a given diameter of A C will always pass through a fixed point Q on the
circle A B, (Williamson’s Diff. Cal. Art. 286) and will have its middle point
on the circle A B. Now any point P on the diameter of A C will always be at
and the Cardioid.
BY H. C. RIGGS.
The inverse of a conic with respect to a focus is a curve called Pascal’s
Limaçon. From the polar equation of a conic, the focus being the pole, it is
evident that the polar equation of the limaçon may be written in the form:
e 1
r = — cosx + — ;
p p
where e and p are constants, being respectively the eccentricity and semi-
latus rectum of the conic.
From the above equation it is readily seen that the curve may be traced
by drawing from a fixed point O on a circle any number of chords and
laying off a constant length on each of these lines, measured from the
circumference of the circle. The point O is the node of the limaçon; and the
fixed circle, which I shall call the base circle, is the inverse of the directrix
of the conic. This is readily shown as follows:—the polar equation of the
directrix is r = p / (e cosx). Hence the equation of its inverse is r = (e
cosx) / p, which is the equation of the base circle of the limaçon.
If the conic which we invert be an ellipse, the point O will be an acnode
on the Limaçon; if the conic be a hyperbola, the point O is a crunode. If the
conic be a parabola, O is then a cusp and the inverse curve is called the
Cardioid.
The limaçon may also be traced as a roulette.
Let the circle A C have a diameter just twice that of the circle A B. Then
a given diameter of A C will always pass through a fixed point Q on the
circle A B, (Williamson’s Diff. Cal. Art. 286) and will have its middle point
on the circle A B. Now any point P on the diameter of A C will always be at
Page 54
a fixed distance from C and will therefore describe a limaçon of which A B
will be the base circle.
The pedal of a circle with respect to any point is a limaçon. This may be
inferred from the general theorem that the pedal of a curve is the inverse of
its polar reciprocal, (Salmon’s H. P. C. Art. 122). For the polar reciprocal of
a conic from its focus is a circle and hence its pedal is a limaçon.
The base circle is the locus of the instantaneous centre for all points on
the limaçon. Let B O P be a line cutting a circle in B and Q. Let the line
revolve about B, Q following the circle; the point P will trace a limaçon.
Now, for any instant, the instantaneous center will be the same whether
Q be following the circle or the tangent at the point where the line cuts the
circle. Therefore the instantaneous center for the point P is found by
erecting a perpendicular to the line P B, through B, and a normal to the
circle at Q. (Williamson’s Diff. Cal. Art. 294). The intersection (C) of these
two lines is the instantaneous center for the curve at the point P. But by
elementary geometry C is on the circle. Now as the line P B revolves
through 360° around B, the line B C which is always perpendicular to it
also makes a complete revolution and the instantaneous center C moves
once round the base circle.
Below we give a list of theorems obtained by inverting the
corresponding theorems respecting a conic. In these theorems any circle
through the pole is called a nodal circle, any chord through the pole is
called a nodal chord, and the line through the pole perpendicular to the axis
of the curve is called the latus rectum. The letters e and p signify
respectively the eccentricity and half the latus rectum of the inverted conic.
The locus of the point of The locus of the point of
intersection of two tangents to a intersection of two nodal tangent
parabola which cut one another circles to a cardioid which cut each
at a constant angle is a hyperbola other at a constant angle is a limaçon
having the same focus and having the same double point and
directrix as the original parabola. director circle.
The sum of the reciprocals of The sum of any two nodal chords
two focal chords of a conic at of a limaçon at right angles to each
will be the base circle.
The pedal of a circle with respect to any point is a limaçon. This may be
inferred from the general theorem that the pedal of a curve is the inverse of
its polar reciprocal, (Salmon’s H. P. C. Art. 122). For the polar reciprocal of
a conic from its focus is a circle and hence its pedal is a limaçon.
The base circle is the locus of the instantaneous centre for all points on
the limaçon. Let B O P be a line cutting a circle in B and Q. Let the line
revolve about B, Q following the circle; the point P will trace a limaçon.
Now, for any instant, the instantaneous center will be the same whether
Q be following the circle or the tangent at the point where the line cuts the
circle. Therefore the instantaneous center for the point P is found by
erecting a perpendicular to the line P B, through B, and a normal to the
circle at Q. (Williamson’s Diff. Cal. Art. 294). The intersection (C) of these
two lines is the instantaneous center for the curve at the point P. But by
elementary geometry C is on the circle. Now as the line P B revolves
through 360° around B, the line B C which is always perpendicular to it
also makes a complete revolution and the instantaneous center C moves
once round the base circle.
Below we give a list of theorems obtained by inverting the
corresponding theorems respecting a conic. In these theorems any circle
through the pole is called a nodal circle, any chord through the pole is
called a nodal chord, and the line through the pole perpendicular to the axis
of the curve is called the latus rectum. The letters e and p signify
respectively the eccentricity and half the latus rectum of the inverted conic.
The locus of the point of The locus of the point of
intersection of two tangents to a intersection of two nodal tangent
parabola which cut one another circles to a cardioid which cut each
at a constant angle is a hyperbola other at a constant angle is a limaçon
having the same focus and having the same double point and
directrix as the original parabola. director circle.
The sum of the reciprocals of The sum of any two nodal chords
two focal chords of a conic at of a limaçon at right angles to each
Page 55
right angles to each other is other is constant.
constant.
P Q is a chord of a conic If P and Q be two points on a
which subtends a right angle at limaçon such that they intercept a
the focus. The locus of the pole right angle at the node, then the locus
of P Q and the locus enveloped of the point of intersection of the two
by P Q are each conics whose nodal circles tangent at P and Q
latera recta are to that of the respectively, is a limaçon whose latus
original conic as √2 : 1 and 1 : rectum is to that of the original
√2 respectively. limaçon as ½√2 : 1. And the envelope
of the circle described on P Q as a
diameter is a limaçon, whose latus
rectum is to that of the original
limaçon as 1 : ½√2.
If two conics have a common If two limaçons have a common
focus, two of their common node, two nodal circles passing each
chords will pass through the through two points of intersection of
point of intersection of their the limaçons, will pass through the
directrices. point of intersection of their base
circles.
Two conics have a common Two limaçons have a common
focus about which one of them is node about which one of them is
turned; two of their common turned; two of the nodal circles
chords will touch conics having through two of their points of
the fixed focus for focus. intersection will envelope limaçons
having fixed node for node.
Two conics are described If two limaçons are described
having the same focus, and the having the same node and base circles
distance of this focus from the of the same diameter, and if the
corresponding directrix of each limaçons touch each other, then twice
is the same; if the conics touch the sine of half the angle between the
one another, then twice the sine
constant.
P Q is a chord of a conic If P and Q be two points on a
which subtends a right angle at limaçon such that they intercept a
the focus. The locus of the pole right angle at the node, then the locus
of P Q and the locus enveloped of the point of intersection of the two
by P Q are each conics whose nodal circles tangent at P and Q
latera recta are to that of the respectively, is a limaçon whose latus
original conic as √2 : 1 and 1 : rectum is to that of the original
√2 respectively. limaçon as ½√2 : 1. And the envelope
of the circle described on P Q as a
diameter is a limaçon, whose latus
rectum is to that of the original
limaçon as 1 : ½√2.
If two conics have a common If two limaçons have a common
focus, two of their common node, two nodal circles passing each
chords will pass through the through two points of intersection of
point of intersection of their the limaçons, will pass through the
directrices. point of intersection of their base
circles.
Two conics have a common Two limaçons have a common
focus about which one of them is node about which one of them is
turned; two of their common turned; two of the nodal circles
chords will touch conics having through two of their points of
the fixed focus for focus. intersection will envelope limaçons
having fixed node for node.
Two conics are described If two limaçons are described
having the same focus, and the having the same node and base circles
distance of this focus from the of the same diameter, and if the
corresponding directrix of each limaçons touch each other, then twice
is the same; if the conics touch the sine of half the angle between the
one another, then twice the sine
Page 56
of half the angle between the axes of the limaçons is equal to the
transverse axes is equal to the difference of the eccentricities.
difference of the reciprocals of
the eccentricities.
If a circle of a given radius If a circle of a given radius pass
pass through the focus (S) of a through the node (S) of a given
given conic and cut the conic in limaçon and cut it in A, B, C, and D;
the points A, B, C, and D; then then
SA. SB. SC. SD is constant. 1
—————— is constant.
(SA. SB. SC. SD)
A circle passes through the A circle passes through the node
focus of a conic whose latus of a limaçon whose latus rectum is 2l,
rectum is 2l and meets the conic meeting the curve in four points
in four points whose distance whose distances from the node are r₁,
from the focus are r₂, r₃, r₄, then
r₁, r₂, r₃, r₄, then r₁ + r₂ + r₃ + r₄ = 2l.
1 1 1 1 2
— + — + — + — = —.
r₁ r₂ r₃ r₄ l
Two points P and Q are Two points P and Q are taken one
taken, one on each of two conics on each of two limaçons which have a
which have a common focus and common node and their axes in the
their axes in the same direction, same direction, such that PS and QS
such that PS and QS are at right are at right angles, S being the
angles, S being the common common node. Then the nodal tangent
focus. Then the tangents at P and circles at P and Q intersect on a
Q meet on a conic the square of limaçon the square of whose
whose eccentricity is equal to the eccentricity is equal to the sum of the
sum of the squares of the squares of the eccentricities of the
eccentricities of the original original limaçons.
conics.
transverse axes is equal to the difference of the eccentricities.
difference of the reciprocals of
the eccentricities.
If a circle of a given radius If a circle of a given radius pass
pass through the focus (S) of a through the node (S) of a given
given conic and cut the conic in limaçon and cut it in A, B, C, and D;
the points A, B, C, and D; then then
SA. SB. SC. SD is constant. 1
—————— is constant.
(SA. SB. SC. SD)
A circle passes through the A circle passes through the node
focus of a conic whose latus of a limaçon whose latus rectum is 2l,
rectum is 2l and meets the conic meeting the curve in four points
in four points whose distance whose distances from the node are r₁,
from the focus are r₂, r₃, r₄, then
r₁, r₂, r₃, r₄, then r₁ + r₂ + r₃ + r₄ = 2l.
1 1 1 1 2
— + — + — + — = —.
r₁ r₂ r₃ r₄ l
Two points P and Q are Two points P and Q are taken one
taken, one on each of two conics on each of two limaçons which have a
which have a common focus and common node and their axes in the
their axes in the same direction, same direction, such that PS and QS
such that PS and QS are at right are at right angles, S being the
angles, S being the common common node. Then the nodal tangent
focus. Then the tangents at P and circles at P and Q intersect on a
Q meet on a conic the square of limaçon the square of whose
whose eccentricity is equal to the eccentricity is equal to the sum of the
sum of the squares of the squares of the eccentricities of the
eccentricities of the original original limaçons.
conics.
Page 57
A series of conics are If a series of limaçons are
described with a common latus described with the same latus rectum,
rectum; the locus of points upon the locus of points upon them at
them at which the perpendicular which the diameter of the nodal
from the focus on the tangent is tangent circle is equal to the semi-
equal to the semi-latus rectum is latus rectum, is given by the equation
given by the equation
pr = -cos 2x
p = -r cos 2x
If POP₁ be a chord of a conic If POP₁ be a nodal circle of a
through a fixed point O, then will limaçon passing through a fixed point
tan ½P₁SO tan ½PSO be a O, then will tan ½ P₁SO tan ½ PSO be
constant, S being the focus of the a constant, S being the node.
conic.
Conics are described with Limaçons are described with
equal latera recta and a common equal latera recta and a common node.
focus. Also the corresponding Also the director circles envelop a
directrices envelop a fixed fixed limaçon having a common node.
confocal conic. Then these Then these limaçons all touch two
conics all touch two fixed conics, fixed limaçons whose latera recta are
the reciprocals of whose latera the sum and difference respectively of
recta are the sum and difference the reciprocals of the variable limaçon
respectively of those of the and of the fixed limaçon, and which
variable conic and their fixed have the same base circle as the fixed
confocal, and which have the limaçon.
same directrix as the fixed
confocal.
Every focal chord of a conic Every nodal chord of a limaçon is
is cut harmonically by the curve, bisected by the base circle.
the focus, and the directrix.
The envelope of circles on The envelope of the
the focal radii of a conic as perpendiculars at the extremities of
described with a common latus described with the same latus rectum,
rectum; the locus of points upon the locus of points upon them at
them at which the perpendicular which the diameter of the nodal
from the focus on the tangent is tangent circle is equal to the semi-
equal to the semi-latus rectum is latus rectum, is given by the equation
given by the equation
pr = -cos 2x
p = -r cos 2x
If POP₁ be a chord of a conic If POP₁ be a nodal circle of a
through a fixed point O, then will limaçon passing through a fixed point
tan ½P₁SO tan ½PSO be a O, then will tan ½ P₁SO tan ½ PSO be
constant, S being the focus of the a constant, S being the node.
conic.
Conics are described with Limaçons are described with
equal latera recta and a common equal latera recta and a common node.
focus. Also the corresponding Also the director circles envelop a
directrices envelop a fixed fixed limaçon having a common node.
confocal conic. Then these Then these limaçons all touch two
conics all touch two fixed conics, fixed limaçons whose latera recta are
the reciprocals of whose latera the sum and difference respectively of
recta are the sum and difference the reciprocals of the variable limaçon
respectively of those of the and of the fixed limaçon, and which
variable conic and their fixed have the same base circle as the fixed
confocal, and which have the limaçon.
same directrix as the fixed
confocal.
Every focal chord of a conic Every nodal chord of a limaçon is
is cut harmonically by the curve, bisected by the base circle.
the focus, and the directrix.
The envelope of circles on The envelope of the
the focal radii of a conic as perpendiculars at the extremities of
Page 58
diameters is the auxiliary circle. the nodal radii of a limaçon is a circle
having for the diameter the axis of the
limaçon.
Below we give a number of theorems respecting
the cardioid obtained by inverting the corresponding
theorems concerning the parabola.
The straight line which bisects The nodal circle which bisects
the angle contained by two lines the angle between the line drawn
drawn from the same point in a from any point on a cardioid to the
parabola, the one to the focus, the cusp and the nodal circle through
other perpendicular to the directrix, the point which cuts the director
is a tangent to the parabola at that circle orthogonally, is a tangent
point. circle at that point.
The latus rectum of a parabola The latus rectum of a cardioid is
is equal to four times the distance equal to its length on the axis.
from the focus to the vertex.
If a tangent to a parabola cut If a nodal tangent circle cut the
the axis produced, the points of axis of a cardioid, the points of
contact and of intersection are intersection and of tangency are
equally distant from the focus. equally distant from the cusp.
If a perpendicular be drawn If a nodal circle be drawn
from the focus to any tangent to a tangent to a cardioid, the diameter
parabola, the point of intersection of such circle passing through the
will be on the vertical tangent. cusp will be a common chord of this
circle and another described on the
axis of the cardioid as diameter.
having for the diameter the axis of the
limaçon.
Below we give a number of theorems respecting
the cardioid obtained by inverting the corresponding
theorems concerning the parabola.
The straight line which bisects The nodal circle which bisects
the angle contained by two lines the angle between the line drawn
drawn from the same point in a from any point on a cardioid to the
parabola, the one to the focus, the cusp and the nodal circle through
other perpendicular to the directrix, the point which cuts the director
is a tangent to the parabola at that circle orthogonally, is a tangent
point. circle at that point.
The latus rectum of a parabola The latus rectum of a cardioid is
is equal to four times the distance equal to its length on the axis.
from the focus to the vertex.
If a tangent to a parabola cut If a nodal tangent circle cut the
the axis produced, the points of axis of a cardioid, the points of
contact and of intersection are intersection and of tangency are
equally distant from the focus. equally distant from the cusp.
If a perpendicular be drawn If a nodal circle be drawn
from the focus to any tangent to a tangent to a cardioid, the diameter
parabola, the point of intersection of such circle passing through the
will be on the vertical tangent. cusp will be a common chord of this
circle and another described on the
axis of the cardioid as diameter.
Page 59
The directrix of a parabola is The base circle is the locus of
the locus of the intersection of the intersection of nodal circles
tangents that cut at right angles. tangent to a cardioid, which cut
orthogonally.
The circle described on any The circle described an any
focal chord of a parabola as nodal chord of a cardioid as
diameter will touch the directrix. diameter will be tangent to the base
circle.
The locus of a point from The locus of the point through
which two normals to a parabola which two nodal circles, cutting a
can be drawn making cardioid orthogonally, and making
complementary angles with the complementary angles with the axis,
axis, is a parabola. can be drawn is a cardioid.
Two tangents to a parabola Two nodal circles tangent to a
which make equal angles with the cardioid which make equal angles
axis and directrix respectively, but with the axis and latus rectum,
are not at right angles, meet on the respectively but do not cut
latus rectum. orthogonally intersect on the latus
rectum.
The circle which circumscribes If three nodal circles be drawn
the triangle formed by three tangent to a cardioid, the three
tangents to a parabola passes points of intersection of these three
through the focus. circles are on a straight line.
If the two normals drawn to a If the two nodal circles cutting a
parabola from a point P make cardioid orthogonally and pass
equal angles with a straight line, through the point P, make equal
the focus of P is a parabola. angles with a fixed nodal circle, the
locus of P is a cardioid.
the locus of the intersection of the intersection of nodal circles
tangents that cut at right angles. tangent to a cardioid, which cut
orthogonally.
The circle described on any The circle described an any
focal chord of a parabola as nodal chord of a cardioid as
diameter will touch the directrix. diameter will be tangent to the base
circle.
The locus of a point from The locus of the point through
which two normals to a parabola which two nodal circles, cutting a
can be drawn making cardioid orthogonally, and making
complementary angles with the complementary angles with the axis,
axis, is a parabola. can be drawn is a cardioid.
Two tangents to a parabola Two nodal circles tangent to a
which make equal angles with the cardioid which make equal angles
axis and directrix respectively, but with the axis and latus rectum,
are not at right angles, meet on the respectively but do not cut
latus rectum. orthogonally intersect on the latus
rectum.
The circle which circumscribes If three nodal circles be drawn
the triangle formed by three tangent to a cardioid, the three
tangents to a parabola passes points of intersection of these three
through the focus. circles are on a straight line.
If the two normals drawn to a If the two nodal circles cutting a
parabola from a point P make cardioid orthogonally and pass
equal angles with a straight line, through the point P, make equal
the focus of P is a parabola. angles with a fixed nodal circle, the
locus of P is a cardioid.
Page 60
Any two parabolas which have Any two cardioids which have a
a common focus and their axes in common cusp and their axes in
opposite directions intersect at opposite directions intersect at right
right angles. angles.
A number of other theorems on the limaçon and
cardioid are given in Professor Newson’s article in
this number of the Quarterly, and these need not be
repeated here.
a common focus and their axes in common cusp and their axes in
opposite directions intersect at opposite directions intersect at right
right angles. angles.
A number of other theorems on the limaçon and
cardioid are given in Professor Newson’s article in
this number of the Quarterly, and these need not be
repeated here.
Page 61
Dialect Word-List.
BY W. H. CARRUTH.
The following are some of the dialect words that have come to one
observer’s ears within the past triennium. They are all from Kansas, unless
otherwise noted. They are printed here to interest others, and to secure a
basis for observation. The writer will be under obligations to any one who
will note his familiarity with any of these words, insert others, or other
meanings, and send them, with a statement of his place of birth and
childhood, to him at Lawrence:
among: all of, as, Where are you going among you?
all: all gone, as, The corn is all. (Indiana, Penn.) Comp. German.
bat: a ‘hard case.’
bid: in, to bid the time of day. (Indiana.)
beeslings: preparation of artificially curdled milk. (Indiana and
Kansas.)
become: to look well in, as, He becomes that coat.
bad: desperate, as in, A bad citizen = a desperate fellow.
behave: to behave well, as in, Do behave now!
bump on a log: something lifeless, as, He sat there like a bump on a
log.
bier: sham, as in pillow-bier. (Vermont.)
branch: a small stream.
breeze: a torrent of talk, as in, He gave me a breeze.
boo: dried mucous.
buckle down: to work persistently.
conniptions: a fit, also ‘conniption fit.’
caba: an old valise. (Penn.)
craps: a game with dice; playing, it is called, ‘shooting craps.’
crawl: to try to escape from an embarrassing situation without
admitting one’s mistake.
crawfish: same as ‘crawl.’
BY W. H. CARRUTH.
The following are some of the dialect words that have come to one
observer’s ears within the past triennium. They are all from Kansas, unless
otherwise noted. They are printed here to interest others, and to secure a
basis for observation. The writer will be under obligations to any one who
will note his familiarity with any of these words, insert others, or other
meanings, and send them, with a statement of his place of birth and
childhood, to him at Lawrence:
among: all of, as, Where are you going among you?
all: all gone, as, The corn is all. (Indiana, Penn.) Comp. German.
bat: a ‘hard case.’
bid: in, to bid the time of day. (Indiana.)
beeslings: preparation of artificially curdled milk. (Indiana and
Kansas.)
become: to look well in, as, He becomes that coat.
bad: desperate, as in, A bad citizen = a desperate fellow.
behave: to behave well, as in, Do behave now!
bump on a log: something lifeless, as, He sat there like a bump on a
log.
bier: sham, as in pillow-bier. (Vermont.)
branch: a small stream.
breeze: a torrent of talk, as in, He gave me a breeze.
boo: dried mucous.
buckle down: to work persistently.
conniptions: a fit, also ‘conniption fit.’
caba: an old valise. (Penn.)
craps: a game with dice; playing, it is called, ‘shooting craps.’
crawl: to try to escape from an embarrassing situation without
admitting one’s mistake.
crawfish: same as ‘crawl.’
Page 62
crock: an earthenware vessel, a large bowl.
chuck: lunch.
chuck-a-luck: loaded (of dice).
coddy: odd, out of fashion.
chug: to strike a blow, as in, Chug him one.
could: to be able, as in, He used to could.
cod: a bit of deceit, as in, He gave the teacher a cod.
Chenuk: a Canadian. (Note the pronunciation.)
dast: to dare, as in, He don’t dast to do it.
dew-claws: hands and knees (?), as in, Get down on your d.,
= apply yourself intensely.
Dick’s hatband: in the phrase, As contrary as Dick’s hatband.
What is the origin of this?
dick-nailer: anything quite satisfactory, as in,
He (it) is a dick-nailer.
drop: advantage, as in, to get the drop on a person (allusion to
dexterity in drawing a revolver). Comp. also: bulge, inside-
track,
whip handle, dead-wood, all used in the same way and with
same sense.
diven, past participle of dive.
drug: pret. of drag.
east: yeast.
emptings: bread dough set to ferment. Note the expression
“It will come out all right in the emptings,” i. e. after it has had
a
chance to stand.
fat up: to increase a stake at cards.
find: to supply with board, as in, Pay five dollars a week and find
him;
I get five dollars and found.
fresh: impudent, (due to greenness).
fog: to filch.
fluke: to steal. (Indiana).
flat: plug tobacco. (Arkansas).
gallery: church, as in, He’s in the gallery.
chuck: lunch.
chuck-a-luck: loaded (of dice).
coddy: odd, out of fashion.
chug: to strike a blow, as in, Chug him one.
could: to be able, as in, He used to could.
cod: a bit of deceit, as in, He gave the teacher a cod.
Chenuk: a Canadian. (Note the pronunciation.)
dast: to dare, as in, He don’t dast to do it.
dew-claws: hands and knees (?), as in, Get down on your d.,
= apply yourself intensely.
Dick’s hatband: in the phrase, As contrary as Dick’s hatband.
What is the origin of this?
dick-nailer: anything quite satisfactory, as in,
He (it) is a dick-nailer.
drop: advantage, as in, to get the drop on a person (allusion to
dexterity in drawing a revolver). Comp. also: bulge, inside-
track,
whip handle, dead-wood, all used in the same way and with
same sense.
diven, past participle of dive.
drug: pret. of drag.
east: yeast.
emptings: bread dough set to ferment. Note the expression
“It will come out all right in the emptings,” i. e. after it has had
a
chance to stand.
fat up: to increase a stake at cards.
find: to supply with board, as in, Pay five dollars a week and find
him;
I get five dollars and found.
fresh: impudent, (due to greenness).
fog: to filch.
fluke: to steal. (Indiana).
flat: plug tobacco. (Arkansas).
gallery: church, as in, He’s in the gallery.
Page 63
gag: an improbable story intended to deceive, as in, He tried to give
me a gag.
go with: to become of, as in, What has gone with my hat? Ohio;
also in Pall Mall Gazette.
grub-stake: to give board.
girling: a ‘girl-boy,’ in contempt.
gaumy: not neat. (Arkansas.)
gob:, or gaub: a shapeless mass, as, a gob of mud, then sportively,
gaubs of wisdom.
gray: an awkward fellow.
get to: to get an opportunity to, as in, He didn’t get to do it.
go to: to intend to, as in, I didn’t go (for) to do it.
gumbo: a peculiar, putty-like dark soil. (Kansas.)
hen: feminine, as in, hen-party;
comp. stag-party, a gathering of men only.
honey: a fine fellow, generally ironically.
hump: to bestir, as, Hump yourself.
hole: bad condition financially; as, He is in the hole, i. e. he has lost.
huckleberry: indifferent, in, a huckleberry Christian.
huckleberry: the right person, as in, You’re my huckleberry.
hornswoggle: to discomfit, as in, I’ll be hornswoggled if I’ll do it.
in it: on the successful side, as, He is not in it, i. e., He has no
prospect of success.
This phrase is universal in 1891.
infare: the reception after a wedding.
in: on the credit side, as, I was in five dollars.
jay: a green, conceited fellow.
jag: a bit of anything; a spree, a brief drunk.
jack mosquito: a large insect of the mosquito family,
three times the size of the pestiferous kind; this one does not
bite.
jimmy: to meddle, as, to jimmy with a thing or person,
to ‘fool with.’ Comp., to ‘monkey with.’
jump: to leave without notice, as to jump the town,
to jump bail; to jump a board-bill is to leave it unpaid.
joint: an illegal saloon. What is the origin of it?
me a gag.
go with: to become of, as in, What has gone with my hat? Ohio;
also in Pall Mall Gazette.
grub-stake: to give board.
girling: a ‘girl-boy,’ in contempt.
gaumy: not neat. (Arkansas.)
gob:, or gaub: a shapeless mass, as, a gob of mud, then sportively,
gaubs of wisdom.
gray: an awkward fellow.
get to: to get an opportunity to, as in, He didn’t get to do it.
go to: to intend to, as in, I didn’t go (for) to do it.
gumbo: a peculiar, putty-like dark soil. (Kansas.)
hen: feminine, as in, hen-party;
comp. stag-party, a gathering of men only.
honey: a fine fellow, generally ironically.
hump: to bestir, as, Hump yourself.
hole: bad condition financially; as, He is in the hole, i. e. he has lost.
huckleberry: indifferent, in, a huckleberry Christian.
huckleberry: the right person, as in, You’re my huckleberry.
hornswoggle: to discomfit, as in, I’ll be hornswoggled if I’ll do it.
in it: on the successful side, as, He is not in it, i. e., He has no
prospect of success.
This phrase is universal in 1891.
infare: the reception after a wedding.
in: on the credit side, as, I was in five dollars.
jay: a green, conceited fellow.
jag: a bit of anything; a spree, a brief drunk.
jack mosquito: a large insect of the mosquito family,
three times the size of the pestiferous kind; this one does not
bite.
jimmy: to meddle, as, to jimmy with a thing or person,
to ‘fool with.’ Comp., to ‘monkey with.’
jump: to leave without notice, as to jump the town,
to jump bail; to jump a board-bill is to leave it unpaid.
joint: an illegal saloon. What is the origin of it?
Page 64
jigger or chigger: a minute red mite, which frequents weeds and
lawns,
burrows beneath the human skin and causes excruciating
itching.
keep: board and lodgings, as, He works for his keep.
lay over: to surpass, as, That lays over anything I know.
larofamedlers: a phrase used generally as equivalent to,
It’s none of your business. (Maryland, Penn., Ohio, Arkansas.)
The word is a corruption of Lay-over for medlers, a lay-over
being a bear-trap consisting of a pit covered with boughs.
light out: to start on the run, as, He ‘lit’ out for home.
lagniap: the extra in a bargain, as, Five dollars, and a hat for lagniap.
(Louisiana.)
lush: to drink heavily, to ‘swill.’
mog: to move, as, Mog along with you.
mogle: the same.
main: very, as, It’s main strange. (Worcester county, Mass.)
mosey.: to move along with a strut.
move: motion, as in, Get a move on you.
mealer: one who takes only meals at a boarding-house.
mind off: to ward off (flies, etc.).
meet up with: to meet. (Tennessee.)
peter out: to dwindle.
pail: to milk, as, to pail the cow. (Penn.)
possessed: anything, as, He acted like ‘all possessed.’
quill: to write. (The Writer.)
quill-wheel: a ‘rattle-trap’ wagon.
ruther: choice, as, If I had my ruther; also, druther.
ride and tie: verbal phrase, describing a mode of travel in
which one vehicle is used by two sets of people, one riding
ahead a
given distance and tying the team where the others who have
walked
will come up to it, the first walking on ahead until overtaken
and passed
by the second, and so on. (Colorado.)
red up: to make tidy.
lawns,
burrows beneath the human skin and causes excruciating
itching.
keep: board and lodgings, as, He works for his keep.
lay over: to surpass, as, That lays over anything I know.
larofamedlers: a phrase used generally as equivalent to,
It’s none of your business. (Maryland, Penn., Ohio, Arkansas.)
The word is a corruption of Lay-over for medlers, a lay-over
being a bear-trap consisting of a pit covered with boughs.
light out: to start on the run, as, He ‘lit’ out for home.
lagniap: the extra in a bargain, as, Five dollars, and a hat for lagniap.
(Louisiana.)
lush: to drink heavily, to ‘swill.’
mog: to move, as, Mog along with you.
mogle: the same.
main: very, as, It’s main strange. (Worcester county, Mass.)
mosey.: to move along with a strut.
move: motion, as in, Get a move on you.
mealer: one who takes only meals at a boarding-house.
mind off: to ward off (flies, etc.).
meet up with: to meet. (Tennessee.)
peter out: to dwindle.
pail: to milk, as, to pail the cow. (Penn.)
possessed: anything, as, He acted like ‘all possessed.’
quill: to write. (The Writer.)
quill-wheel: a ‘rattle-trap’ wagon.
ruther: choice, as, If I had my ruther; also, druther.
ride and tie: verbal phrase, describing a mode of travel in
which one vehicle is used by two sets of people, one riding
ahead a
given distance and tying the team where the others who have
walked
will come up to it, the first walking on ahead until overtaken
and passed
by the second, and so on. (Colorado.)
red up: to make tidy.
Page 65
ring off: to desist or cease talking, technical phrase from the
telephone,
but passed into common usage. Comp., “saw off.”
rucus: quarrel, rumpus.
saddy: thanks, thank you. (Penn.)
saw off: ‘ring off;’ a short person is said to look ‘sawed off.’
shet, shut, shed: rid, as, to get shut of anything.
shear off: to pour off (water from settlings). (Ohio.)
shapin’s: young peas and beans—the unfilled pod. (Arkansas.)
should have said: said, as, He should have said yes,
i. e., indeed he said yes.
shin: to climb, as, to shin up a tree.
shut off: to make to stop talking, as, Do shut him off.
shebang: anything run-down, as house, carriage, affairs.
scrooch or scrooge: to cringe.
skin-away: a small boy. (Civilized Sac Indians.)
skin: to run, as, Skin out, i. e., run away.
skid: to sneak through examinations. (Yale.)
skid: a sharp-pointed instrument.
skit: a mild lie.
skads: great quantities, as, Skads of money, of books, etc.;
also = money, as, He hasn’t the skads.
singed cat: a shrewd ‘rustler,’ of unpretentious appearance.
skulduggery: knavery.
skip: to run away, as, Now skip, i. e., Go away from here.
skip: to leave hastily, as, He skipped the town.
slouch: a gawky fellow; then anything imperfect, as in the phrase,
He’s no slouch, i. e., He is an expert;
no slouch of a horse, i. e., a first-rate horse.
sloomiky: not neat.
slander: to saunter.
slump: to fail to meet requirements, as, in examinations.
slumps: great quantities. (Clark’s Second Hand Catalogue, N. Y.)
sleep: to give lodgings. I have heard, We can eat and sleep him.
smoodle: a sycophant. (Kansas University.) Comp., ‘swipe.’
smokewood: dried water-soaked wood used by small boys as
substitute for cigars.
telephone,
but passed into common usage. Comp., “saw off.”
rucus: quarrel, rumpus.
saddy: thanks, thank you. (Penn.)
saw off: ‘ring off;’ a short person is said to look ‘sawed off.’
shet, shut, shed: rid, as, to get shut of anything.
shear off: to pour off (water from settlings). (Ohio.)
shapin’s: young peas and beans—the unfilled pod. (Arkansas.)
should have said: said, as, He should have said yes,
i. e., indeed he said yes.
shin: to climb, as, to shin up a tree.
shut off: to make to stop talking, as, Do shut him off.
shebang: anything run-down, as house, carriage, affairs.
scrooch or scrooge: to cringe.
skin-away: a small boy. (Civilized Sac Indians.)
skin: to run, as, Skin out, i. e., run away.
skid: to sneak through examinations. (Yale.)
skid: a sharp-pointed instrument.
skit: a mild lie.
skads: great quantities, as, Skads of money, of books, etc.;
also = money, as, He hasn’t the skads.
singed cat: a shrewd ‘rustler,’ of unpretentious appearance.
skulduggery: knavery.
skip: to run away, as, Now skip, i. e., Go away from here.
skip: to leave hastily, as, He skipped the town.
slouch: a gawky fellow; then anything imperfect, as in the phrase,
He’s no slouch, i. e., He is an expert;
no slouch of a horse, i. e., a first-rate horse.
sloomiky: not neat.
slander: to saunter.
slump: to fail to meet requirements, as, in examinations.
slumps: great quantities. (Clark’s Second Hand Catalogue, N. Y.)
sleep: to give lodgings. I have heard, We can eat and sleep him.
smoodle: a sycophant. (Kansas University.) Comp., ‘swipe.’
smokewood: dried water-soaked wood used by small boys as
substitute for cigars.
Page 66
smearcase: a preparation of clabber, often called ‘Dutch cheese.’
snake: to snatch stealthily.
snum: to vow, as in, Well, I snum. Reported as common among girls.
snouge: unfair, as, a snouge game.
snide: inferior, unfair, as, a snide game, a snide watch, etc.
so fashion: thus, as, Do it so fashion.
soap: bribe money in elections.
sugar: same as soap.
sugar, (explet): pshaw!
split: anything, as, He ran like split, also, lickety split.
spunky: pouting, incensed.
sprinkle ┐
├ : a small number; also a considerable number.
sprinkling ┘
stag: masculine, as, A stag-party.
stag: to go to an entertainment without a lady companion,
as, to stag it.
Stoughton-bottle: an unimpressionable fellow.
(From Stoughton’s Bitters, common in the 50’s.)
streak: rapid rate, as, He talked a streak,
or more commonly, a blue streak.
streak: to run, as, He streaked it for home.
steer: to manage (votes), as, A steering committee,
the same as ‘whips’ in Parliament.
striffin, or strifning: the membrane surrounding the abdominal viscera.
(Missouri.)
swan: to vow, as, in exclamation, I swan!
swat: to slap or strike, as, Swat him in the eye.
suz: (excl.): me, as in, Dear suz, and Law suz.
swipe: a sycophant. (Harvard.)
tacky: not fashionably dressed.
tewed: harrassed, as, I’m tewed and fretted.
that: so, as in, Not that far.
throw over: to ‘cut’ (an acquaintance).
throw over: to stop, as, I threw her over,
i. e., stopped talking. Common among railroad men; derived
from the use of the reverse lever.
snake: to snatch stealthily.
snum: to vow, as in, Well, I snum. Reported as common among girls.
snouge: unfair, as, a snouge game.
snide: inferior, unfair, as, a snide game, a snide watch, etc.
so fashion: thus, as, Do it so fashion.
soap: bribe money in elections.
sugar: same as soap.
sugar, (explet): pshaw!
split: anything, as, He ran like split, also, lickety split.
spunky: pouting, incensed.
sprinkle ┐
├ : a small number; also a considerable number.
sprinkling ┘
stag: masculine, as, A stag-party.
stag: to go to an entertainment without a lady companion,
as, to stag it.
Stoughton-bottle: an unimpressionable fellow.
(From Stoughton’s Bitters, common in the 50’s.)
streak: rapid rate, as, He talked a streak,
or more commonly, a blue streak.
streak: to run, as, He streaked it for home.
steer: to manage (votes), as, A steering committee,
the same as ‘whips’ in Parliament.
striffin, or strifning: the membrane surrounding the abdominal viscera.
(Missouri.)
swan: to vow, as, in exclamation, I swan!
swat: to slap or strike, as, Swat him in the eye.
suz: (excl.): me, as in, Dear suz, and Law suz.
swipe: a sycophant. (Harvard.)
tacky: not fashionably dressed.
tewed: harrassed, as, I’m tewed and fretted.
that: so, as in, Not that far.
throw over: to ‘cut’ (an acquaintance).
throw over: to stop, as, I threw her over,
i. e., stopped talking. Common among railroad men; derived
from the use of the reverse lever.
Page 67
tear-down: to thrash, as, He gave the boy a good tearing down.
toad on a tussock: anything dull or lifeless.
He sat there like a toad on a tussock.
tousle: to disarrange (hair).
tousey: frowsy.
topside: on top of, as in, The best man topside o’ God’s green earth.
trade-lash: an exchange of compliments. (Wellesley.)
trottin’-riggin’s: best suit of clothes.
two sticks: anything, as, He’s as cross as two sticks.
up above: up, as in, Up above stairs.
whootle-dasher: a ‘rustler.’
want: for was not, were not, etc.
wamus, wampus, warmus: a close, generally knit jacket.
(Illinois, Pennsylvania, Ohio, Wisconsin, New England.)
PROSPECTUS.
The Kansas University Quarterly is maintained by the University of
Kansas as a medium for the publication of the results of original research by
members of the University. Papers will be published only upon
recommendation by the Committee of Publication. Contributed articles
should be in the hands of the Committee at least one month prior to the date
of publication. A limited number of author’s separata will be furnished free
to contributors.
The Quarterly will be issued regularly, as indicated by its title. Each
number will contain fifty or more pages of reading matter, with necessary
illustrations. The four numbers of each year will constitute a volume. The
price of subscription is two dollars a volume, single numbers varying in
price with cost of publication. Exchanges are solicited.
Communications should be addressed to
V. L. Kellogg,
University of Kansas,
Lawrence.
toad on a tussock: anything dull or lifeless.
He sat there like a toad on a tussock.
tousle: to disarrange (hair).
tousey: frowsy.
topside: on top of, as in, The best man topside o’ God’s green earth.
trade-lash: an exchange of compliments. (Wellesley.)
trottin’-riggin’s: best suit of clothes.
two sticks: anything, as, He’s as cross as two sticks.
up above: up, as in, Up above stairs.
whootle-dasher: a ‘rustler.’
want: for was not, were not, etc.
wamus, wampus, warmus: a close, generally knit jacket.
(Illinois, Pennsylvania, Ohio, Wisconsin, New England.)
PROSPECTUS.
The Kansas University Quarterly is maintained by the University of
Kansas as a medium for the publication of the results of original research by
members of the University. Papers will be published only upon
recommendation by the Committee of Publication. Contributed articles
should be in the hands of the Committee at least one month prior to the date
of publication. A limited number of author’s separata will be furnished free
to contributors.
The Quarterly will be issued regularly, as indicated by its title. Each
number will contain fifty or more pages of reading matter, with necessary
illustrations. The four numbers of each year will constitute a volume. The
price of subscription is two dollars a volume, single numbers varying in
price with cost of publication. Exchanges are solicited.
Communications should be addressed to
V. L. Kellogg,
University of Kansas,
Lawrence.
Page 68
Footnotes:
[1] See note A.
[2] A few of the results of this section are due to the late Mr. H. B. Hall.
[3] See note B.
[4] G = German, S = Scandinavian, F = French, W = Welsh, Du = Dutch.
[5] Mostly FeO, and so calculated.
[6] With alkalies.
Transcriber’s Notes:
The cover image was created by the transcriber, and is in the public domain.
Typographical errors have been silently corrected but other variations in spelling and
punctuation remain unaltered.
[1] See note A.
[2] A few of the results of this section are due to the late Mr. H. B. Hall.
[3] See note B.
[4] G = German, S = Scandinavian, F = French, W = Welsh, Du = Dutch.
[5] Mostly FeO, and so calculated.
[6] With alkalies.
Transcriber’s Notes:
The cover image was created by the transcriber, and is in the public domain.
Typographical errors have been silently corrected but other variations in spelling and
punctuation remain unaltered.
Page 69
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