Set forth in a lucid and informative style in this monograph are the signs and symptoms of compressed air intoxication and the narcosis from inert gases. The subject is covered in relation to anesthesia, as well as to conditions of hyperbaric pressure as in caisson workers and divers. The tables are especially helpful. This will be of particular interest to anesthesiologists and to physicians involved in the care of anyone subjected to hyperbaric gas or air pressures.