Conte nts. 



I. Introductory 3 



n. The Cubic Scroll of the First Kind 6 



III. Coordinates on S 7 



IV. Curves on S 8 



V. The Curve (p,q) as the Intersection of a Surface S with S 11 



VI. Singularities of the Curves (pj,q) in terms of p and q . . 30 

 Vn. Geometry on the Cubic Scroll from the point of view of 



Plane Curves 37 



