Amino Acid Metabolism and Genetic Variation, edited by William L. Nyhan, M.D., Ph.D. New York: McGraw-Hill, Blakiston Division, 1968, 495 pp., $22.50

This book, the product of a symposium held March 1967 at Freeport, Grand Bahama Island, was sponsored jointly by the Department of Pediatrics, University of Miami School of Medicine, and the Johnson and Johnson Institute for Pediatric Service. Fifty-three experts contributed recent information, some of it unpublished, on a group of diverse yet related diseases. The book is divided into 11 parts. Roughly one fifth of the book is devoted to problems relating to phenylalanine and tyrosine metabolism.