The publication of books that "apply the world's knowledge to the world's needs" is the ideal of this house and it is intended that the different volumes of this series shall express this ideal in a very concrete way.

Human Physiology. By John W. Ritchie, Professor of Biology, College of William and Mary. A text on physiology, hygiene, and sanitation for upper grammar or junior high schools. $1.60.

Laboratory Manual for Human Physiology. By Carl Hartman, University of Texas. A manual to accompany Ritchie's Human Physiology. Bound in paper and cloth. 60 cents and $1.00.

Science for Beginners. By Delos Fall, Albion College, Michigan. A beginning text in general science for intermediate schools and junior high schools. $1.68.

Exercise and Review Book in Biology. By J. G. Blaisdell, Yonkers, N. Y., High School. A combined laboratory guide, notebook and review book for students' use. Written from the standpoint of efficiency and furnishing material for a year's work and to accompany any one of several high-school texts in general biology. Bound in strong paper. $1.20.

Trees, Stars, and Birds. By E. L. Moseley, Ohio State Normal College, Bowling Green. A book of outdoor science for junior high schools and the upper grammar grades. $1.80.

Personal Hygiene and Home Nursing. By Louisa C. Lippitt, University of Wisconsin. A practical text for use with classes of young women in vocational and industrial high schools, colleges, and normal schools. $1.68.

Science of Plant Life. By E. N. Transeau, Ohio State University. A scientific and very practical text for high schools. $1.88.

ZoÖlogy. By T. D. A. Cockerell, University of Colorado. A text for college use. $3.60.

Experimental Organic Chemistry. By A. P. West, University of the Philippines. A text for college use. $3.20.

Common Science. By Carleton W. Washburne, Superintendent of Schools, Winnetka, Illinois. Especially made for junior high schools. $1.68. Also Manual for above, 20 cents.

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