Book Review Diagnosis and Treatment of Surgical Diseases of the Spinal Cord and Its Membranes . By Charles A. Elsberg, M.D., F.A.C.S., Professor of Clinical Surgery at the New York University and Bellevue Hospital Medical College; Attending Surgeon to Mount Sinai Hospital and to the New York Neurological Institute. With 158 illustrations, three of them in colors. Philadelphia and London: W. B. Saunders Company. 1916.