BOOK REVIEWS

Abstract

Book reviewed in this article:Birds, by Gayle Pickwell, Professor of Zoology, at San José State College, San José, California.A Laboratory Introduction to Animal Ecology and Taxonomy, by Orlando Park, Associate Professor of Zoölogy, Northwestern University; W. C. Allee, Professor of Zoölogy, University of Chicago; and V. E. Shelford, Professor of Zoölogy, University of IllinoisGrowing Plants Without Soil. The A.B.C. of Plant Chemiculture (Soilless Chemiculture, Water Culture, Hydroponics, Tank Farming, Sand Culture) Including Plant Growth Hormones and Their Use. By D. R. Matlin, M.A, Professor of Plant Chemicullure, Belmont Evening High School, Los Angeles, Calif.The Principles of Heredity, Second Edition, by Laurence H. Snyder, Sc.D., Professor of Zoology, Ohio State University, Columbus, OhioThe Photismi de Lumine of Maurolycus, Translated from the Latin into English by Henry Crew, Northwestern University.The Origin of Canyons, by Douglas Johnson, Professor of physiography, Columbia University.Modern Agricultural Mathematics, a Text Book for Students of Agriculture in High Schools, Vocational Schools and Rural Schools; and a Handy Reference Book for Farmers and Other Workers in the Various Branches of Agriculture. Containing Methods of Calculation for All Types of Agricultural Problems, by Maurice Nadler, Department of Mathematics, Agriculture Division of Newtown High School, Long Island.Mathematical Methods in Engineering, by Theodore v. Karman, Director of the Guggenheim Aeronautics Laboratory, California Institute of Technology and Maurice A. Biot, Assistant Professor of Mechanics, Columbia University; Honorary Professor, University of Louvain.Useful Mathematics Workbook, by Mary A. Potter, Supervisor of Mathematics, Racine, Wisconsin.