Few names, if any, are more outstanding in the modern study of hypertension than those of the group who have worked in the Institute of Professor Houssay in Buenos Aires. In this monograph under the authorship of Braun-Menendez and his associates, a full and intensively documented account of the development of the subject is given. The thoroughness of the discussion can be inferred from the bibliography of over twelve hundred references. The experimental work on hypertension and the clinical implications are reviewed. There are numerous charts, tables, diagrams and graphs illustrating the text, and the format of the book and the large type are attractive. Dr. Dexter is to be congratulated on his excellent translation and thanked by English-speaking readers for bringing within their scope this admirable monograph.