Periodically in the evolution of an important branch of clinical medicine there develops a critical need for a textbook which combines with the clinical aspects of disease syndromes an in-depth review of the sciences basic to the disorders discussed, as well as a carefully selected but com prehensive review of pertinent literature. LABHART'S Clinical Endo crinology revised and translated into English provides for this need in the field of endocrinology in an exemplary manner. Prof. LABHART has selected his individual authors with great care, and they in turn have provided authoritative monographs. An interesting, useful and informative introduction to each chapter is provided by a tabulation of the dates of important or significant contributions to the field. The chapter subdivisions present in great detail a wide variety of subjects such as embryology, anatomy, biochemistry, physiology, indi vidual hormones and their analogues, biosynthesis, metabolism and regulation of hormone release as well as a full discussion of the clinico pathological correlations. The bibliography is unusually extensive and will provide an important source book for all investigators and students in the field.