Book Review The Molecular and Genetic Basis of Neurological Disease Edited by Roger N. Rosenberg, Stanley B. Prusiner, Salvatore Dimauro, Robert L. Barchi, and Louis M. Kunkel. 1023 pp., illustrated. Boston, Butterworth-Heinemann, 1993. $225. 0-7506-9069-0 Molecular Basis of Neurology (Molecular Basis of Clinical Medicine.) Edited by P. Michael Conneally. 296 pp., illustrated. Boston, Blackwell Scientific, 1993. $39.95. 0-86542-150-1