Dr. Bellet is eminently qualified to write a book on any phase of heart disease, and this text is based on his own wide experience. It is both a reference and a textbook, which aims to interest and inform the internist, general practitioner, and cardiologist. It ably attains this objective. It is comprehensive, accurate, easily readable, profusely illustrated, and has ample references. It should prove of greatest value to the general practitioner. The cardiologist might find much in it that seems elementary. As a reference book, it compares favorably with others published recently. The chapters on premature contractions and auricular flutter are particularly comprehensive and simply treated. This book should prove useful to physicians in general practice, the internist, the cardiologist, and to the intern or resident.