This is the first complete handbook on inhalational therapy written by a physician with wide experience in the application of physical principles to clinical medicine. The first chapter deals with the historical and physiologic background of the therapeutic use of oxygen, carbon dioxide, helium, positive pressure, lung immobilization and vaporized solutions of epinephrine and neosynephrine. In the next thirty chapters the author discusses the pathologic physiology and specific inhalational treatment of various diseases, including pneumonia, pulmonary edema, congestive heart failure and bronchial asthma. Methods of inhalational therapy and technics of gas analysis are described in the last seven chapters, with clear illustrations and practical guidance in the choice of apparatus. The book will be useful to physicians and technicians who are responsible for the therapeutic use of gases in clinical medicine and in many phases of war medicine as well.