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MATHEMATICS

FOR PRACTICAL MEN:

BEING

A COMMON-PLACE BOOK

OF

PRINCIPLES, THEOREMS, RULES, AND TABLES,
IN VARIOUS DEPARTMENTS

OF

PURE AND MIXED MATHEMATICS,

WITH THEIR APPLICATION;

ESPECIALLY

TO THE PURSUITS OF SURVEYORS, ARCHITECTS, MECHANICS,
AND CIVIL ENGINEERS.

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WITH NUMEROUS ENGRAVINGS.

BY

OLINTHUS GREGORY, LL.D., F.R.A.S.,

Corresponding Associate of the Academy of Dijou; Honorary Member of the Literary and Philosophical Society of
New York; of the New York Historical Society; of the Literary and Philosophical, and the Antiquarian
Societies of Newcastle-upon-Tyne; of the Cambridge Philosophical Society; of the Institution
of Civil Engineers, &c. &c., and Professor of Mathematics in the Royal Military Academy.

SECOND AMERICAN FROM THE SECOND LONDON EDIȚION,
CORRECTED AND IMPROVED.

Only let men awake, and fix their eyes, one while on the nature of things, another while
on the application of them to the use and service of mankind."-Lord Bacon.

PHILADELPHIA:

HENRY CAREY BAIRD,

INDUSTRIAL PUBLISHER,

No. 406 WALNUT STREET.

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