A N
INTRODUCTION
T O
ASTRONOMY.
IN A
SERIES of LETTERS,
FROM A
PRECEPTOR to his PUPIL.
In which the most useful and interesting Parts of theScience are clearly and familiarly explained.
ILLUSTRATED WITH COPPER-PLATES.
-By JOHN BONNYCASTLE,
Of the Royal Military Academy, Woolwich.
The SECOND EDITION, Corrected and Improved,
--Docuit quæ maximus Atlas,
Hie canit errantem Lunam, Solisque labores.
Virgil^
Into the heav’n of heav’ns I have presum’d,
An earthly guest, and drawn empyreal air.
Milton.
L 0 tU«Ic
Tol-yl.ftCtffi
LONDON,
PRINTED FOR J. JOHNSON, NO, 72, ST. PAUL’SCHURCH-YARD.
M DCC LXXXVII.