The author presents an altogether timely treatise which takes up physiology from an entirely different standpoint. The book is well written and readable. The English is excellent, and the incidents chosen are apt. The first part of the book is taken up largely with the part of physiology that deals with the nerves, including the special senses. The cardiovascular system is next taken up, together with the blood and then the lungs. The structure of the gastrointestinal, as well as the genito-urinary, system is given several pages. The remaining chapters deal with body neutrality, water content of the body, temperature of the body, exercise and rest, protection against disease, the skin, the autonomic nervous system, the balance of endocrine organs and the treatment of emergencies, with an appendix on metabolism. The book is not only useful from a practical standpoint, but the reading of it often suggests, here and there,