Four new titles in The General Chemistry Monograph Series, published recently (1963) by W. A. Benjamin, Inc., 2465 Broadway, New York City, are of interest to biologists. These include The Structure of Molecules, by Gordon M. Barrow; The Shape of Carbon Compounds, by Werner Herz; How Chemical Reactions Occur, by Edward L. King; and Elementary Chemical Thermodynamics, by Bruce H. Mahan.