Book Review Introduction to Anesthesia: The principles of safe practice. By Robert D. Dripps, M.D.; James E. Eckenhoff, M.D.; and Leroy D. Vandam, M.D. 8°, cloth, 276 pp., with 47 illustrations and 13 tables. Line drawings by Leroy D. Vandam, M.D. Philadelphia: W. B. Saunders Company, 1957. $4.75.