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journal of Snatximj) anti Bfjjj^iolocjj). 



ATRESIA OF THE AOETIC OEIFICE, DUE TO 

 ANOMALOUS DEVELOPMENT OF THE AURI- 

 CULAE SEPTUM.i By Joseph A. Blake, M.D., 



Assistant Demonstrator of Anatomy, Columbia University ; 

 Surgeon to St Lukes and Harlem Hospitals. 



The specimen, on which this contribution is based, was 

 removed from an infant born at the Sioane Maternity Hospital 

 in New York, 



The mother was healthy. She presented a supernumerary 

 mamma ; the site not stated. One previous confinement was 

 normal. 



The child, a male, weighed 6 lbs. 1h oz. at birth, was 

 slightly cyanotic, otherwise normal. It nursed poorly, but at 

 time of death had gained If ozs. 



It died on the fifth day, apparently from cardiac failure, 

 stimulation being ineffectual. 



Autopsy by Dr James Ewing, who kindly furnished me with 

 the specimen, was recorded as follows : — 



Eight auricle is of very large size. Foramen ovale covered 

 by a valve, but not closed along edge ^ in. long. Eight ven- 

 tricle of very large size. In septum between ventricles are a 

 number of large spaces traversed by muscular bands. Ventricles 

 do not communicate. Left auricle receives pulmonary veins, 

 but is very small. Left ventricle holds about 3-4 drops of fluid. 

 No vessels appear to be given from it. Viscera intensely con- 

 gested. Lungs very atelectatic. 



The heart when received by me was still attached to the 

 right lung. Numerous incisions had been made in its walls, 

 and the attenuated ascending aorta had been divided at the point 



^Read before the Association of Americau Anatomists, Twelfth Annual 

 Session, held at New Haven, Conn., Dec. 1899. 



VOL. XXXV. (N.S. vol. XV.) — OCT. 1900, A 



