The number of pages of this encyclopedic Textbook of Medicine has grown to 1923 exclusive of the index. In addition to two editors it has five associate editors as well as a total of 170 contributors of articles. Along with its growth numerically it has its usual good up-to-date coverage of diseases, their ethology, pathology, pathophysiology,diagnosis and therapy. The book will probably be of most use to students and recent medical graduates. It is laid out for them as well as a one-volume encyclopaedic reference can be.