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AN

ELEMENTARY TREATISE

ON

PLANE & SPHERICAL TRIGONOMETRY,

WITH THEIR APPLICATIONS TO

NAVIGATION, SURVEYING, HEIGHTS AND DISTANCES,

AND SPHERICAL ASTRONOMY,

AND PARTICULARLY ADAPTED TO EXPLAINING THE

CONSTRUCTION OF BOWDITCH'S NAVIGATOR, AND THE

NAUTICAL ALMANAC.

BY BENJAMIN PEIRCE, A. M.,
Perkins Professor of Astronomy and Mathematics in Harvard University.

THIRD EDITION, WITH ADDITIONS.

BOSTON:

JA MES MUNROE AND COMPANY.

M DCCC XLV.

:ary
Nov. 2, G15
Transferred for
Mathen irtical Library

LAY I 5 1000
Harvard University

Math. Dept Library
From the estate

of Dr. Gustavus Hay

Entered according to act of Congress, in the year 1845, by

JAMES MUNROE AND COMPANY, in the Clerk's Office of the District Court of the District of Massachusetts.

.

Thurston, Torry, f. Company, Printers,

31 Devonshire Street, Boston.

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