The fourth volume of the annual publication of the Escudero Clinic at Buenos Aires maintains the high standard of the previous volumes that have been reviewed in these pages. It is an imposing tome of 600 pages, this one not having the usual large quota of illustrations.
There are twenty-two separate communications, almost all of them this year falling under the head of cardiovascular disease. While there is comparatively little original research work reported, there are the usual painstaking studies in the clinic and laboratory of a series of unusual cases which often throw important new light on disease. This is especially true of the series of studies on the arrhythmias. These interesting conditions were investigated thoroughly with all modern means, and the results of treatment, especially with quinidine or digitalis, are elaborately illustrated with electrocardiograms and pulse tracings. The chart on page 97 demonstrates by electrocardiogram the points of