Mathematics. Courses. *3915.17 =**£.5118.16 Schooten, F. van. -1661. Francisci a Schooten... (Continued) Pergaei loca plana restituta.-De organica conica- rum sectionum in plano descriptione tractatus.- Sectiones triginta miscellanese, The half-title reads, Francisci a Schooten Exercitationvm mathematicarvm libri quinque.