Recently while attending a pathologicoclinical conference devoted exclusively to the demonstration of material obtained from children at autopsy, which is conducted once each month by Dr. Richard H. Jaffé, director of the department of pathology of the Cook County Hospital in Chicago, I was much impressed by the gross demonstration of several infants' hearts. The first specimen, from a baby 4 months old, showed marked hypertrophy and dilatation. The musculature was reddish brown and occupied a large space in the thoracic cavity. Before death the child presented symptoms of cyanosis and marked dyspnea. Dr. Jaffé thought that the condition shown by this specimen belonged to the yet unexplained group of idiopathic cardiac hypertrophies.
The second specimen came from an infant about 7 months old who had suffered from a severe anemia. The heart was pale, whitish and markedly increased in size. The right heart was dilated, though the myocardium was