Clinical Aspects of the Electrocardiogram. A Manual for Physicians and Students. By HAROLD E. B. PARDEE, M.D., Associate in Medicine, Cornell University Medical School; Assistant Attending Physician, New York Hospital; Consulting Cardiologist, Lying-in-Hospital and Woman's Hospital, New York City. 8 vo. cloth, 236 pages, 56 illustrations, $4.00 Net. Paul B. Hoeber, Inc., Publishers, New York City, 1924.

This is a very valuable and practical monograph on the use of electrocardiographic records in the diagnosis of heart disease. The history, theory and technique of the electrocardiogram, the variations of the normal electrocardiogram, the changes due to hypertrophy of the auricles and ventricles and myocardial abnormalities, the clinical significance of abnormal waves, disturbances of rate or rhythm, and the clinical application of the electrocardiogram are discussed in ten concise and very well written chapters. The literature has been thoroughly searched and analyzed, and the practical results presented in a clear and readable form. The bibliography of the most important contributions to the subject is given in an appendix. A monograph of this type has long been needed by medical students. They will find in it an assemblage of the most important facts concerning the electrocardiogram that will be of the greatest service in clarifying their knowledge of this diagnostic method. The practitioner will find it of equal value in its practical application. The book is nicely printed.

A Diabetic Manual, for the Mutual Use of Doctor and Patient. By ELLIOTT P. JOSLIN, M.D., Clinical Professor of Medicine, Harvard Medical School; Consulting

Physician, Boston City Hospital; Physician to New England Deaconess Hospital. Third Edition, Thoroughly Revised. 211 pages, 18 illustrations and numerous tables. Cloth, $2.00. Lea and Febiger, Philadelphia and New York, 1924.

Joslin's Manual is well known to all internists, who come into contact with diabetics, through the first two editions, which dealt with the education of the diabetic and with the prevention of diabetes. In the third edition the author emphasizes the importance of an early diagnosis of the disease as the important factor in securing a mild course and a successful treatment. He extends the diagnosis of diabetes from the doctor to the individual himself or even to the friends of the latter. When once the diagnosis is made, the possibilities of diet and insulin can be learned from the physician and it is along this line that the Manual can be of especial service. The avowed object of the book is to help make the home safe for the diabetic. There can be no doubt of the great practical value of this Manual. It is invaluable to both patient and physician. It is also a well printed and nicely bound little book.

The Internal Secretions. For the use of students and physicians. By ARTHUR WEIL, Assistant Professor in Physiology at the University of Halle. Authorized Translation of the Third German Edition by Jacob Gutman, M.D., Director Brooklyn Diagnostic Institute. Cloth, 287 pages and 45 illustrations. Price, $4.00. The Macmillan Company, New York, 1924.

This work is a concise and condensed presentation of endocrinology from the standpoint of the physiology of the internal

secretions. It does not aim to cover exhaustively the entire field of endocrinology, but to serve as an introduction to the subject for students and physicians. It presents the main facts concerning the endocrine glands, treating their incretions as agents concerned in the production and regulation of the separate bodily functions, and interpreting the part which they take in each particular life process. The method of approach is from the physiological side, rather than from the pathological. This method lessens the danger of an overemphasis being laid upon the function of any one individual gland, and makes clear the fact that the human organism must be considered as one unit possessing an intimate connection between individual cell groups, and that a change in one species of cells produces changes in all others. Inasmuch as the information concerning the endocrine secretions is scattered through an enormous mass of literature inaccessible in part to the average student, the author has rendered a distinct service in collecting the evidence, sifting it and presenting it in this form. It is a most valuable little book for both the student and the practitioner, and the author presents its subject-matter in a sane and judicial manner, and free from exaggeration. The make-up of the book is excellent.

Life Insurance Examination. Edited by FRANK W. FOXWORTHY, Ph.B., M.D., Indianapolis, Indiana, formerly Chairman Medical Section, American Life Convention; President of the American Association of Medical Examiners; Associate Editor of "Medical Insurance". Cloth, 738 pages, 156 illustrations, $9.00. The C. V. Mosby Company, St. Louis, 1924.

Forty-nine collaborators aided in the production of this book, most of them being medical directors of the best-known life insurance companies of the country. Each author is responsible for his own contribution. The forty-eight chapters resulting from this collaboration cover very completely the field of life insurance examinations from the standpoint of the medical examiner. The history of life insurance examinations, examination for industrial insurance, group insurance, fraternal insurance, relation of the agent to the medical examiner, organization of medical department, the medical director, medical referees, medical examiner, general instructions to examiners, the etiquette of medical examinations, the examination of women, numerical method of valuing lives for insurance, insurance of substandard lives, relation of build to mortality, examinations for health and accident insurance, health conservation, insurance fraud, legal aspects of life insurance examinations are some of the headings of the chapters devoted to the mechanism of life insurance examinations. Other chapters consider the chief facts concerning the nature of the diseases constituting the leading factors of mortality. The various laboratory tests and diagnostic methods necessary to a life insurance examination are given in detail. The book fulfills in an excellent and thorough manner its avowed object of guide to the medical examiner, medical director and medical referee. It will serve as a most valuable text-book to the recent medical graduate who is just beginning his work as an examiner in either ordinary or industrial insurance. The book shows a high degree of typographical excellence.