Diseases of the Heart

The suggestion that foreign medical reports be given greater emphasis than heretofore seems worth while, because of the fact that they are less readily available to the average reader. Accordingly, the review this year assumes a more international character. The material has again been organized very simply, with the etiologic subdivisions made as complete as possible. For example, under the heading Rheumatic Heart Disease will be found nearly all the material specifically relating to this illness. No attempt has been made to review the various textbooks and monographs, as this has already been done adequately. PHYSIOLOGY AND EXPERIMENTAL PATHOLOGY Investigation of the action of the vagus and sympathetic nerves or of their chemical mediators on the heart is being vigorously pushed. 1 In an effort better to understand the factors controlling cardiac acceleration during muscular exercise, Brouha, Cannon and Dill 1a made a series of extremely interesting experiments on totally