Problems in Animal Metabolism. A Course of Lectures Given in the Physiological Laboratory of the London University at South Kensington in the Summer Term, 1904.

If one may judge by the activities of writers and publishers, our English colleagues appreciate—somewhat better than we seem to do—the importance of recent progress in biologic chemistry for the solution of medical problems. Recently we reviewed in these columns two books written with the object of rendering these advances accessible to medical readers; namely, Mann's "Chemistry of the Proteids," and Hill's "Recent Advances in Physiology and Biochemistry." Of similar purport is this book by Leathes, which is based on a course of lectures given in the physiologic laboratory of London University with the object of presenting to medical students in correlated form the results of recent studies in biologic chemistry, in so far as they apply to human physiology and to medicine. An introductory chapter discusses briefly the modern theories and discoveries concerning the chemistry of the proteids and other constituents of the animal body, as well as the