This manual on diabetes is one of a series for the patient and the physician. It is well written, in a style easy for a patient to read. Any intelligent person can easily grasp the subject matter. It offers much also to the physician in general practice, who can well afford to read it. The summaries at the end of each chapter help to outline quickly the main points and should be of much help to the busy practitioner. Any one who knows its contents can practice diabetes in a rational manner. The book includes some of the most recent work in this subject and is therefore a handy compendium. A whole chapter is devoted to questions asked by the patient and the answers to them, which practically cover the subject. It is not a reference work but a practical manual.