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Publications of CHRISTOPHER SOWER COMPANY, Philadelphia.

Brooks's Normal Geometry and Trigonometry. By the aid of Brooks's Geometry the principles of this beautiful science can be easily acquired in

one term. It is so condensed that the amount of matter is reduced one half, and yet the chain of logic is preserved intact. The subject is made interesting and practical by the introduction of Theorems for original demonstration, Practical Problems, Mensuration, etc., in their appropriate places. The success of the work is very remarkable. Key, $1.05*.

Brooks's Plane and Solid Geometry. Complete.

Brooks's Plane and Spherical Trigonometry. The subjects have been fully developed with all the clear reasoning, broad analyses, and lucid ex.

planation for which the author has become famous. Newest methods are used. Colleges and schools of the highest grade will find them works they have been wanting. Key, $1.50.

Brooks's Normal Algebra. The many novelties, scientific arrangement, clear and concise definitions and principles, and

masterly treatment contained in this work make it extremely popular. Each topic is so clearly and fully developed that the next follows easily and naturally. Young pupils can handle it, and should take it up before studying Higher Arithmetic. It can be readily mastered in one term, and only needs introduction to make it indispensable. Key, $1.05*,

Peterson's Familiar Science. 12mo.

Peterson's Familiar Science. 18mo. This popular application of science to every-day results is universally liked, and has an immense

circulation. No school should be without it. Teachers have do difficulty in teaching it.

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Griffin's Lecture Notes on Chemistry.
Griffin's Natural Philosophy.

BY ROY F. GRIFFIN, LATE PROP. OF NATURAL SCIENCES AND ASTRONOMY, LAKE FOR EST UNIVERSITY, ILL. Professor Griffin presents his subject simply, clearly and logically, his definitions are brief and

clear, and his experiments vivid and impressive, so that the subject is easily mastered. The latest applications of the science to Electric Lights, Telephone, Phonograph, Electro-Plating, Magnetic Engines, Telegraphing, etc., are lucidly explained. Reading French Grammar. Irregular Irench Verbs. Series of Modern French Authors. Annotated.

By ED. H. MAGILL, Ex-President of Swarthmore College. Sheppard's Text-Book of the Constitution.

Sheppard's First-Book of the Constitution. The ablest jurists and professors in the country, of all political denominations, have given these

works their most unqualified approval. Every young voter should be master of their contents.

Montgomery's Industrial Drawing. This consists of a series of Drawing Books, comprising a Primary and Intermediate Course.

The system is self-teaching, is carefully graded and is easily taught.

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