BOOK REVIEWS

Book reviewed in this article: Practical Physics Manual, by W. R. Ahrens, Englewood High School, T. L. Harley, Hyde Park High School, E. E. Burns, Medill High School Laboratory Manual for General Science, by Lewis Elhuff, George Westinghouse High School, Pittsburgh, Pa. Food Study—A Textbook in Home Economics for High Schools, by Mabel T. Wellman, Indiana University. Laboratory Course of Practical Electricity, by Maurice J. Archibald, Wendell Phillips High School, Chicago, Ill. An Introduction to Astronomy, by Forest Ray Moulton, University of Chicago. A Catalogue of Scientific Instruments, L. E. Knott Apparatus Company, Boston. Geography of the Upper Illinois Valley—History of Development, by Carl O. Sauer. The Principles of Health Control, by Francis M. Walters, Professor of Physiology and Hygiene, State Normal School, Warrensburg, Mo. Laboratory and Field Work in Zoology, by Robert W. Hegner, University of Michigan. Laboratory Problems in Civic Biology, by George William Hunter, Dewitt Clinton High School, N. Y. City. A Laboratory Manual for General Science, by Caldwell, Eikenberry and Pieper, School of Education, University of Chicago. Reproduction and Sex Hygiene, by Walter Holtes Eddy, High School of Commerce, New York City. One Hundred Exercises in Agriculture. Gehrs and James, State Normal, Warrensburg, Missouri, and University of Wisconsin. Human Physiology, by Percy G. Stiles, Harvard University and Massachusetts Institute of Technology. Outlines of Physiology, by Edward G. Jones and Allen H. Bunce, both of Emory University, Atlanta, Ga. Textbook of Anatomy and Physiology, by Elizabeth R. Bundy, Woman's Hospital, Philadelphia. How to Know the Mosses, by Elizabeth M. Dunham, member of the Sullivant Moss Society. Dairy Farming, by C. H. Eckles, University of Missouri, and G. F. Warren, Cornell University. A Textbook of Human Physiology, by Albert P. Brubaker, Jefferson Medical College. Plant Anatomy, by William Chase Stevens, University of Kansas.