A thorough and sound job, but not as popular in handling as the majority of books in the recent field. The book opens with a brief background, building up to Pasteur, then follows through with a survey of the new vistas opening up with the discovery of the germ causation of disease. Then the development of antisepsis. And on to the new sciences, -- of nutrition, of vitamins, of endocrine glands, of psychiatry. The progress in preventive medicine, in clinical treatment. Life stories of leading pioneers are scattered through the text, but it is primarily a history of medicine in its widening scope, with anecdotal and human interest facets secondary. The author makes a definite contribution to the better understanding of what these developments mean to science and to humanity, which should be valuable in allied fields.