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This book deals with the sources from which knowledge of the heart and vascular system arises. It is divided into three main sections. The first section consists of a résumé of the chronologic presentation of this subject from 5000 B.C. to 1925 A.D. As this section occupies 225 pages one must realize that it is packed with information. The section mentions the name of the contributor, the subject of his contribution and the date on which the contribution was made. The story progresses rapidly from era to era but contains information about practically everyone who made an important contribution to this subject. A good list of references follows each chapter in this section.

The second section is made up of a series of special biographies. These are short sketches of the lives of the men who the authors believe deserve special mention. The sketches are well done, but this section