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AN

INTRODUCTION

TO

ASTRONOMY.

Printed by S. Hamilton, Weybridge, Surrey.

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AN

INTRODUCTION

то

ASTRONOMY.

IN A

SERIES OF LETTERS,

FROM A

PRECEPTOR TO HIS PUPIL.

IN WHICH THE MOST USEFUL AND INTERESTING
PARTS OF THE SCIENCE ARE CLEARLY AND
FAMILIARLY EXPLAINED.

ILLUSTRATED WITH COPPER-PLATES.

BY JOHN BONNYCASTLE,

PROFESSOR OF MATHEMATICS IN THE ROYAL MILITARY ACADEMY,
WOOLWICH.

THE SEVENTH EDITION,

CORRECTED, AND GREATLY IMPROVED.

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Hic canit errantem Lunam, Solisque labores. VIRGIL.

Into the heav'n of heav'ns I have presumed,
An earthly guest, and drawn empyreal air.

MILTON.

LONDON:

PRINTED FOR J. NUNN; LAW AND WHITTAKER; CADELL
AND DAVIES; LONGMAN, HURST, Rees, orme AND CO.;
J. RICHARDSON; J. MAWMAN; BALDWIN, CRADOCK, AND
JOY; GALE AND FENNER; AND J. ROBINSON.

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