O F

CONIC SECTIONS

In THREE BOOKS:

In which are demonstrated the principal
Properties of the PARABOLA, EL
LIPSE, and HYPERBOLA,

By RICHARD JACK,
Teacher of Mathematicks in Edinburgh.

E DI NÉ V R G H,
Printed by THO. WAL. and THO, RUDDIMANS.

M. DCC. XLII.

Entred in STATIONERS-HALL, according to Act of Parliament.

то

The Right Honourable,

JOHN

Lord HO PE

My LORD,

HE great perfection your Lordship has arrived at in the knowledge of Arts and Sciences, makes me presume to dedicate to your Lordship the following sheets. Should I follow the common practice of Authors, it would offend that native modesty which renders