1950. 53 pp. Paperback in Very Good condition, in original blue wrappers. New York: Bulletin of the American Museum of Natural History. Volume 94, Article 7, pp. 403-456, 1950. The purpose of the survey is to bring together, and publish as a series of monographs, the available information on all aspects of the interrelation of biology and geochemistry. The survey is intended as more than a synthetic summary.