BOOK REVIEWS

Book reviewed in this article: General Chemistry for Colleges, by B. Smith Hopkins, Professor of Inorganic Chemistry in the University of Illinois, Author “Chemistry of the Rarer Elements” and joint author “Exercises in Chemistry .” Chemistry for Today, by William McPherson, and William Edwards Henderson, both Professors of Chemistry in the Ohio State University, and George Winegar Fowler, Head of the Science Department, Central High School, and Supervisor of Science, City Schools, Syracuse, New York . A Laboratory Manual of Qualitative Analysis by Frederick W. Miller, Jr., Ph.D. Assistant Professor of Chemistry, New York University . New Frontiers of Physics by Paul R. Heyl, Physicist, U. S. Bureau of Standards . Green Magic, The Story of the World of Plants by Julie Closson Kenly . Everyday Arithmetic for Printers by John E. Mansfield, Head of Department of Printing, Wentworth Institute, Boston . Arithmetic of Electricity, by T. O'Connor Sloane . Projective Pure Geometry by Thomas F. Holgate, Professor of Mathematics in Northwestern University . Alternating Currents for Technical Students by Calvin C. Bishop, Head of the Department of Drafting and Design, Technical High School, Buffalo, New York . Economic Geography by R. H. Whitbeck, Professor of Geography, University of Wisconsin and V. C. Finch, Professor of Geography, University of Wisconsin . A General Science Workbook by Charles H. Lake, First Assistant Superintendent of Schools, Cleveland, Ohio, Louis E. Welton, Assistant Principal and Head of Science Department, John Hay High School, Cleveland, Ohio, and James C. Adell, Teacher of Science, John Hay High School, Cleveland, Ohio . The Book of Knowledge Classroom Guide by Ellis G. Persing, Editorin‐Chief, School of Education, Cleveland . My Workbook in General Science by Ellis C. Persing, Department, of Biology and General Science, School of Education of Western Reserve University and Kimber M. Persing, Department of Science, Glenville High School, Cleveland, Ohio . Electricity for Beginners by Edward Harper Thomas, Author of “Forty Elementary Lessons in Electricity.” Second Revised and Enlarged Edition with 28 original Drawings .