This is a clear, orderly and well proportioned presentation of the irregularities of the heart. As the title implies, the book is devoted largely to the clinical features of the arrhythmias, but there is presented enough of the anatomy and physiology underlying the different conditions to make plain to the reader the meaning of the altered rhythm when met at the bedside. Well chosen figures, largely of electrocardiograms, illustrate the various types of rhythms. There is no insistence on the electrocardiograph as an indispensable adjunct to the examining physician. He is taught that he can in most instances detect these conditions without the special instrument of precision; but he can obtain great aid in the understanding and interpretation of the irregularity by a study of these tracings. The work may be commended to student or practitioner as a reliable compend on this subject.