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Sheldon & Company's Text-'Books.

PROFESSOR OLNEY'S

NEW MATHEMATICAL SERIES.

The success of Prof. Olney's series has been most wonderful.

With all their admitted excellencies, both the Author and Publishers have felt that it was possible to retain their many attractive features and yet adapt the books more perfectly to the special school-room wants.

To accomplish this most desirable end, Professor Olney has been accumulating very valuable suggestions. He has also, for several years, had associated with him in the preparation of this new series, some of the best practical teachers in the country.

The design is to present to the educational public the best and most teachable series of Mathematics ever published. The work is now so far advanced that the Publishers are able to make the above pleasing announcement, which they feel will be of great interest to all who are engaged in teaching.

THE NEW SERIES EMBRACES:

Ärithm

Olney's First Lessons in Arithmetic. Just PUBLISHED.

II. Olney's Practical Arithmetic.

This book has been published but a short time, but it has already had the most wonderful succe88.

They are models of beauty and cheapness.

For schools of a high grade, Professor Olney has prepared

III.

The Science ujo árithmetic.

IV. The First Principles of Algebra. AN INTRODUCTION TO THE AUTHOR'S COMPLETE AND

UNIVERSITY ALGEBRAS.

V.

Olney's Complete Algebra, New EDITION, IN LARGE TYPE.

This book is now entirely re-electrotyped in larger and more attractire type. The explanatory matter is greatly lessened. The attractive features of this book, which have made it the most popular Algebra over published in this country, are all retained.

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