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A

TREATISE

ON

ASTRONOMY,

IN WHICH

THE ELEMENTS OF THE SCIENCE

ARE DEDUCED

IN A NATURAL ORDER,

FROM THE APPEARANCES OF THE HEAVENS

ΤΟ

AN OBSERVER ON THE EARTH;

DEMONSTRATED

ON MATHEMATICAL PRINCIPLES;

AND EXPLAINED

BY AN APPLICATION

ΤΟ

THE VARIOUS PHENOMENA.

BY OLINTHUS GREGORY,

TEACHER OF MATHEMATICS, CAMBRIDGE,

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PRINTED FOR G. KEARSLEY, FLEET-STREET;

AND SOLD BY THE AUTHOUR, AND BY DEIGHTON, IN CAMBRIDGE; BY
COOKE, AND BY HANWELL AND PARKER, OXFORD; BELL AND BRAD-
FUTE, EDINBURGH; BRASH AND REID, GLASGOW; BY BROWN AND
BY BURNETT, ABERDEEN; AND BY COLBERT, DUBLIN.

1802.

[T. Davison, White-Friars.]

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