The great progress that has been made in the past few decades toward perfecting general anesthesia and especially nitrogen monoxide-oxygen anesthesia has been due in great part to the splendid achievements of the late Dr. E. I. McKesson. It is indeed fortunate that the accomplishments, "the teachings and the findings of the `Master' as well as his own impressions and experiences" are preserved particularly by one who was "his friend, partner and co-worker."
The book is divided into six parts, the first of which considers the theories and signs of nitrogen monoxide-oxygen anesthesia. The second and the third part are concerned primarily with the general and special technics of administration and the advantages and disadvantages of the method. The fourth part deals with its use in the various types of operative procedures. The employment of the method for dental anesthesia and analgesia is presented in the fifth part, and the