The first volume, "Interpretations," of the new edition of Peters and Van Slyke's book deals with four topics. Part I covers the subject of energy metabolism. Slightly more space is devoted to this subject in the new edition than in the previous one. Many of the tables contained in the first edition have been omitted. Articles written as recently as 1945 are mentioned, and the presentation of most topics in this section has been revised. A few minor subjects are presented, as in the first edition. Some new topics have been added; these include a discussion of the estimation of metabolism from perspiration.
Part II is concerned with carbohydrate metabolism. This section is much larger than that in the previous edition and has been subdivided into chapters dealing with chemistry and physiology and with clinical application of existing knowledge concerning carbohydrate metabolism. This section represents a comprehensive treatment of the