True cor biloculare is one of the rarest of cardiac anomalies. Maude Abbott,1 in an exhaustive study of congenital heart disease, found 10 cases in the literature reported by Wilson,2 Farre,3 Ramsbotham,4 Forster,5 Rudolf,6 Konstantinowitsch,7 Gierke,8 Schroeder,9 Jensen10 and Rivet and Gerard.11 In a later article12 she added a case communicated personally by Dr. Edward Weiss. A review of the literature to 1931 failed to reveal any additional cases, although Corsdress13 reported one that anatomically was cor triloculare biatrium. The same is true of Baumgarth's case.14 The latter cited numerous cases, but a study of these reveals the fact that mostly they are, anatomically, cases of cor triloculare even though functionally cor biloculare.
REPORT OF A CASE
History.—A girl, aged 5 months, was first seen in the dispensary of the Lenox Hill Hospital on Nov.