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ROBINSON'S

MATHEMATICAL, PHILOSOPHICAL,

AND ASTRONOMICAL

CLASS BOOKS,

PUBLISHED AND FOR SALE BY

JACOB ERNST,

No. 112 Main Street, Cincinnati.

FOR SALE IN

BOSTON:

B. B. MUSSEY & CO.; R. DAVIS & CO.; W. J. REYNOLDS & CO.; PHILLIPS, SAMPSON & CO.

NEW YORK:

MASON BROTHERS; D. BURGESS & CO.; NEWMAN & IVISON; PRATT, WOODFORD & CO.; A. S. BARNES & CO.

PHILADELPHIA:

LIPPINCOTT, GRAMBO & CO.; THOMAS, COWPERTH WAITE & CO.;

E. H. BUTLER & CO.; URIAH HUNT & SON.

BUFFALO, N. Y.

PHINNEY & CO.; MILLER, ORTON & MULLIGAN.

SYRACUSE, N. Y..

E. H. BABCOCK & CO.

AND THE PRINCIPAL BOOKSELLERS IN THE UNITED STATES.

ROBINSON'S CLASS BOOKS.

ROBINSON'S THEORETICAL AND PRACTICAL ARITHMETIC,

In which, in addition to the usual modes of operation, the science of numbers, the Prussian canceling system, and other important abbreviations hold a prominent place.

KEY TO ROBINSON'S ARITHMETIC.

ROBINSON'S ELEMENTARY TREATISE ON ALGEBRA,

For beginners. In this work, some very common subjects are presented in a new light.

From the author's experience and strict attention to the preparation of suitable text-books, the public are assured that they will find this a very desirable work for the place it is designed to fill.

ROBINSON'S ALGEBRA, UNIVERSITY EDITION,

Being a full course of the science in a clearer and more concise form than any other work of the kind heretofore published. It contains all the modern improvements, and develops the true spirit of the science, and is highly appreciated by the most important institutions of learning in the Eastern States, as well as in the West.

KEY TO ROBINSON'S ALGEBRA,

For the use of teachers, and for those who study without a teacher, containing, also, the Indeterminate and Diophantine analysis in concise form.

ROBINSON'S GEOMETRY,

Containing Plane and Spherical Trigonometry, Conic Sections, and the necessary
Logarithmic tables, for practical use.

This book is designed to give the student a knowledge of Geometry, at once theoretical, practical and efficient. The clearest methods of demonstration are employed according to the nature of the proposition, whether it be strictly Geometrical or Algebraical, or partaking of the combined character and power of both. In short, the special attention of all interested in mathematical science is called to this work.