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THE

FOREIGN AND DOMESTIC

COMMERCIAL CALCULATOR;

OR,

A COMPLETE LIBRARY OF NUMERICAL, ARITHMETICAL, AND
MATHEMATICAL FACTS, TABLES, DATA, FORMULAS, AND
PRACTICAL RULES FOR THE MERCHANT AND

MERCANTILE ACCOUNTANT.

BY

E. S. WINSL O W.

Author of “Comprehensive Mathematics,” “Computists' Manual,"
“Machinists' and Mechanics' Practical Calculator and Guide,"

"Tin-plate and Sheet-iron Workers' Monitor."

66

Fourth Edition. Enlarged.

BOSTON:
PUBLISHED BY THE AUTHOR.

186 7.

GEO. W. LINDSEY, Local Agent for the sale of Winslow's Mathematical Works, No. 897 Washington Street, Boston.

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Entered, according to Act of Congress, in the year 1867, by

E. S. WINSLOW,

In the Clerk's Office of the District Court of the District of Massachusetts.

STEREOTYPED BY C. J. PETERS & Sox.

Printed by Wm. A. Hall, No. 46, Congress Street, Boston.

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man.

On presenting this work to the public, it may be proper to state that it has been designed and written mainly for the practical

It contains a vast array of Numerical, Arithmetical, and Mathematical facts, tables, data, formulas, and rules, pertaining to a great variety of subjects, and applicable to a diversity of ends, as well as much information of a more general nature, valuable to the artisan, and commercial classes; thus meeting the wants, in an eminent degree, of the lovers of the exact sciences, and the practical wants of students in the mathematics.

The facts and data alluded to have been gathered, with much care and patience, from a great variety of sources, or derived, often by toilsome investigations, from known and accredited truths. The care that has been taken in respect to these, it is thought, should secure for this particular department reliance and trust.

The tables, which are numerous, have, with few exceptions, been composed and arranged expressly for the work, and a confidence is felt that they may be relied on for accuracy.

From the valuable works of Dr. Ure, Adcock, Gregory, Grier, Brunton ; from the publications of the transactions of London, Edinburgh, and Dublin Philosophical Societies; and from the publications by the Smithsonian Institute, much valuable information has been gained, relating mainly to machinery and the arts; and to these sources the author feels indebted.

The conciseness with which the work has been generally written would, perhaps, be found an objection, were it not that all the propositions and problems of intricacy are accompanied with examples and illustrations, and, in the matters of Geometry, additionally accompanied with diagrams. The whole, it is thought, will appear clear to him who consults it. A prominent feature in the design has been to produce a useful work, and one which in the way

of price shall be readily accessible to all.

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