It is seldom that a textbook attains completeness, accuracy, and clinical usefulness in the coverage of a broad clinical field to the extent that is accomplished in this volume. This second edition of Williams' popular text has had to be so radically revised in the light of the voluminous literature on the endocrines of the past five years that the chapters on the adrenals, ovaries, pancreas, thyroid, neuroendocrinology, and obesity have been completely rewritten. Only an endocrinologist of Williams' stature could collect such a galaxy of stars to help in his enterprise of separating the wheat from the chaff in this vast and controversial field. This they have done with gratifying results. Each section contains an account of the anatomy and physiology of the organs under consideration and descriptions of the disease states due to hypofunction and hyperfunction, inflammation, tumors, etc., with a much more than cursory evaluation of diagnostic