BOOK REVIEWS

Book reviewed in this article: A D iagnostic S tudy of S tudent D ifficulties in G eneral M athematics in F irst Y ear C ollege W ork , by Elizabeth Boyd, Ph.D, Teachers College, Columbia University . T he P ythagorean P roposition , by Elisha S. Loomis, Ph.D., LL.B., Professor Emeritus, Baldwin‐Wallace College P lane and S pherical T rigonometry , by L. M. Kells, Ph.D., Associate Professor of Mathematics, United States Naval Academy; W. V. Kern, Assistant Professor of Mathematics, United States Naval Academy; and J. R. Bland, Associate Professor of Mathematics, United States Naval Academy . M athematics I nstruction in the U niversity H igh S chool , by Members of the Department of Mathematics of the University High School of the University of Chicago. R ound the W orld in I ndustry , by Gerald Collins. Cloth. Pages xi+180. 13.5×22 cm. 1940. The Chemical Publishing Company, Inc. T ime and I ts R eckoning , by R. Barnard Way and Noël D. Green. Cloth. Pages viii+137. N ature R ecreation , by William Gould Vinal, Professor of Nature Education, and Director of the Nature Guide School, Massachusetts State College . T he S tory of S uperfinish , by Arthur M. Swigert, Jr., Director of Production Research for Chrysler Division . T he D evelopment of M athematics , by E. T. Bell, Professor of Mathematics, California Institute of Technology .