_The Nature of Radioactive Fallout and Its Effects on Man_, Hearings before the Special Subcommittee on Radiation of the Joint Committee on Atomic Energy, Congress of the United States, 85th Congress, 1st Session, U. S. Government Printing Office, 1957, Volume I, 1008 pp., $3.75; Volume II, 1057 pp., $3.50. Available from the Office of the Joint Committee on Atomic Energy, Congress of the United States, Senate Post Office, Washington, D. C. 20510. _Genetics, Radiobiology, and Radiology_, Proceedings of the Midwestern Conference, Wendell G. Scott and Evans Titus, Charles C. Thomas Publisher, Springfield, Illinois 62703, 1959, 166 pp., $5.50. Articles Genetic Hazards of Nuclear Radiations, Bentley Glass, _Science_, 126: 241 (August 9, 1957). Genetic Loads in Natural Populations, Theodosius Dobzhansky, _Science_, 126: 191 (August 2, 1957). Radiation Dose Rate and Mutation Frequency, W. L. Russell and others, _Science_, 128: 1546 (December 19, 1958). Ionizing Radiation and the Living Cell, Alexander Hollaender and George E. Stapleton, _Scientific American_, 201: 95 (September 1959). Radiation and Human Mutation, H. J. Muller, _Scientific American_, 193: 58 (November 1955). Ionizing Radiation and Evolution, James F. Crow, _Scientific American_, 201: 138 (September 1959). Motion Pictures _Radiation and the Population_, 29 minutes, sound, black and white, 1962. Produced by the Argonne National Laboratory. This film explains how radiation causes mutations and how these mutations are passed on to succeeding generations. Mutation research is illustrated with results of experimentation on generations of mice. A discussion of work with fruit flies and induced mutations is also included. This film is available for loan without charge from the AEC Headquarters Film Library, Division of Public Information, U. S. Atomic Energy Commission, Washington, D. C. 20545 and from other AEC film libraries. The following films were produced by the American Institute of Biological Sciences and may be rented from the Text-Film Division, McGraw-Hill Book Company, 330 West 42nd Street, New York 10036. _Mutation_, 28 minutes, sound, color, 1962. This film discusses chromosomal and genetic mutations as applied to man. Muller’s work in inducing mutations by X rays is described. These three films are 30 minutes long, have sound, are in black and white, and were released in 1960. They are part of a 48-film series that is correlated with the textbook, _Principles of Genetics_, (fifth edition), Edmund W. Sinnott, L. C. Dunn, and Theodosius Dobzhansky, McGraw-Hill Book Company, 1958, 459 pp., $8.50.