This treatise is a concise practical handbook designed as a graduate course. It presents the methods practiced in the tumor clinic of Stanford University. The booklet is a revision of a syllabus on the diagnosis and treatment of cancer originally published in 1937. Chapters on the cancer problem and on radiation therapy are followed by discussions of cancer affecting various organs. The treatise contains much interesting information. The booklet is nicely compiled and the material well arranged. The bibliography might have been selected with better care and more critically. The author has succeeded in presenting some useful information on cancer in the brief space of 100 pages. Necessarily a comprehensive treatment of any of the subjects is impossible in attempting to cover so large a subject in such a brief space.