BOOK REVIEWS

Book reviewed in this article: Earth Science, Third Edition, by Gustav L. Fletcher, Former Chairman, Department of Physical Science, James Monroe High School, New York City , and Caleb Wroe Wolfe, Chairman, Department of Geology, Boston University. How to Know the Spiders, by B. J. Kaston, Professor of Biology, Teachers College of Connecticut ; and Elizabeth Kaston. General Biology, by Leslie A. Kenoyer, Head, Department of Biology, Western Michigan College ; Henry N. Goddard, Late Professor of Biology, Western Michigan College ; and Dwight D. Miller, Associate Professor of Zoology, University of Nebraska. Plant Morphology, by Arthur W. Haupt, Professor of Botany, University of California. A Hundred Years of Biology, by Ben Dawes, D.Sc., Reader in Zoology, King's College, University of London. Health and Physical Fitness, Second edition, by Florence L. Meridith, Late Professor of Hygiene and Public Health, Tufts College , Leslie W. Irwin, Professor of Health Education, Boston University , Wesley M. Staton, Associate Professor of Health and Physical Education, University of Florida. Plane Geometry: A Clear Thinking Approach, Third Edition, by Leroy H. Schnell, State Teachers College, Indiana, Pennsylvania , and Mildred G. Crawford, Roosevelt School, Michigan State Normal College, Ypsilanti, Michigan. Principles of Mathematical Analysis, by Walter Rudin, Department of Mathematics, University of Rochester. Analytic Geometry and Calculus, by Lloyd L. Smail, Ph.D., Professor of Mathematics, Lehigh University. Elements of the Differential and Integral Calculus, Revised Edition, by William Anthony Granville, Ph.D. LL.D., Formerly President of Gettysburg College , with the editorial cooperation of Percey F. Smith, Ph.D., Yale University. Atoms, Men and God, by Paul E. Sabine. Textbook of Botany, Revised Edition: By E. N. Transeau, Emeritus Professor of Botany, Ohio State University , H. C. Sampson, Professor of Botany, and Plant Pathology, Ohio State University , and L. H. Tiffany, Professor of Botany, Northwestern University. Synchros, Self‐Synchronous Devices and Electrical Servo‐Mechanisms, by Leonard R. Crow, Educational Specialist in Design and Development of Training Aids for Teaching Electricity, and Director of Research and Development, Universal Scientific Company. Basic Ideas of Mathematics, by Francis G. Lankford, Jr., University of Virginia , and John R. Clark, Teachers College, Columbia University. The Teaching of Secondary Mathematics, by Claude H. Brown, Professor of Mathematics, Central Missouri State College.