D E

instrumentis

PLANETARIIS.

Cui usui inserviunt, & quomodo sunt

tractanda.

A Samuele F os tero, ohn Astrommu?ro-fefftrein Collegio Greshami, hondinu

O F V % H E

PL AN ETARY

INSTRUMENTS-

To what end they serve , and how they are

to be used.

By SAMUEL FostER, fmetmie Prose fur of Astro-nomie in Grefliam Colledge > London.

L 0 NsD I

Ex Officina Leybourniana.

SM. DC. LIX.