CONTENTS. 
SECTION I. 
ON THE PLANE AND STRAIGHT LINE. 
ART. PAGE 
1—id. Equations to a plane and straight line 1 
17—41. Problems on the plane and straight line 13 
SECTION II. 
ON SURFACES OF THE SECOND ORDER. 
42—52. Equations to a sphere, and to a cylinder, cone, and 
surface of revolution 32 
53—65. Equations and forms of surfaces that have a center 39 
66—72. Equations and forms of surfaces that have not a 
center 50 
73—78. Rectilinear generating lines 54 
SECTION III. 
ON THE PROJECTIONS OP LINES AND PLANE SURFACES, AND ON 
THE TRANSFORMATION OF CO-ORDINATES. 
79—82. Length of the projection of a line, and area of the 
projection of a plane surface 62 
83—87- Oblique co-ordinates (54 
88—98. Transfoi’mation of co-ordinates. Polar co-ordinates... 68 
99—106. Plane sections of surfaces 7(5