Criteria for the Classification and Diagnosis of Heart Disease.

In the preface written by Dr. Wyckoff, chairman of the heart committee, the following statements, are made: "For the most effective study of any kind of disease and in order that people working in different places may know that they are using the same terms for the same conditions, it is necessary to establish precise methods of labeling. This necessitates two things: (1) uniformity of nomenclature and (2) uniform criteria for using the nomenclature. Such labels, or nomenclatures, should as far as possible be descriptive and descriptive only of the conditions which they indicate. The criteria should be precise definitions of the states named in the nomenclature." This little volume has been most carefully prepared to meet this demand and should be successful. In addition to a consideration of nomenclature and classification based on etiology, anatomic and physiologic change, and functional capacity, there is included in compact form the essential