This new edition of an old, standard primer was written and revised by an acknowledged authority on education of the diabetic patient. As in the past, its style is delightfully simple and direct. Dr. Joslin has an intuitive feeling for answering the questions that all patients ask: the result is an absorbing text and a gold mine of information, presented for the most part in language even a child can understand. There are sections on the nature of diabetes and its incidence; the history of major discoveries, including insulin; instructions about food, urine testing, exercise, hygiene, and the use of insulin; diabetic acidosis and hypoglycemic reactions; infections and vascular complications; and heredity, marriage, pregnancy, and children. Occasional question and answer sections and brief, illustrative case reports, photographs, and diagrams amplify the didactic portions and add interest. The size is convenient, the type clear, and the workmanship of fine quality. This