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A

T R E A TI SE

OF

PLANE TRIGONOMETRY. ,

AND THE

MENSURATION OF HEIGHTS AND DISTANCES.

TO WHICH IS PREFIXED

A SUMMARY VIEW OF THE NATURE AND USE

OF.

LOGARITHMS.

ADAPTED TO

THE METHOD OF INSTRUCTION IN SCHOOLS AND ACADEMIES

BY JEREMIAH DAY, D.D. LL.D.

LATE PRESIDENT OF YALE COLLEGE.

NEW YORK:
IVISON & PHINNEY, 178 FULTON STREET;

(SUCCESSORS OF NEWMAN & IVISON, AND MARK H. NEWMAN & Co.)
CHICAGO: S. C. GRIGGS & CO., 111 LAKE ST.

BUFFALO: PHINNEY & CO., 188 MAIN STREET
AUBURN: J. C. IVISON & co. DETROIT: A. M'FARREN.
CINCINNATI: MOORE, ANDERSON & CO.

1855.

un
LTERED, according to Act of Congress, in the year 1848, by

JEREMIAH DAY,
In the Clerk's Oifice of the District Court of the United States for the

Southern District of New York.

THOMAS B. SMITH, STEREOTYPER,

216 WILLIAM STREET, N. Y.

J. D. BEDFORD, PRINTER,

138 FULTON STREET.

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