In thirty-five years this book has gone into the seventh edition. The first three editions, 1902-1909, were prepared under the editorship of D. J. Cunningham, the next three editions under the editorship of Arthur Robinson, and the present edition under the editorship of Drs. J. C. Brash and E. J. Jamieson. The retirement of the previous editor, Professor Robinson, has entailed a change in certain sections of the book, especially Professor Robinson's own chapters on human embryology and the blood vascular and lymphatic systems, which have been revised by Dr. Brash, who has also revised the introduction to the book. This and the retirement of Prof. J. T. Wilson necessitated two new contributors, Prof. R. D. Lockhart of the University of Birmingham, who took over the chapter on myology, and Prof. A. B. Appleton of the University of London, who takes over the chapter on the ductless glands. Since only