WORLD BOOK COMPANY

Yonkers-on-Hudson, New York
2126 Prairie Avenue, Chicago

NEW-WORLD SCIENCE SERIES

Edited by JOHN W. RITCHIE

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.

Completed

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. $1.28.

Laboratory Manual for Human Physiology. By Carl Hartman, University of Texas. A manual to accompany Ritchie's Human Physiology. Price, paper 48 cents, cloth 92 cents.

Science for Beginners. By Delos Fall, Albion College, Michigan. A beginning text in general science for intermediate schools and junior high schools. Price $1.40.

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. Price 96 cents.