History.—This patient, a boy, came under observation, Dec. 27, 1922, at the age of 6 weeks. At birth he weighed 6½ pounds (2,954 Gm.) and never reached standard height or weight for his age. Except for tonsillitis at 14 months, he enjoyed good health until the present illness. In the summer of 1925, he lived on a farm in Iowa and developed a habit of chewing grass.
In October, 1925, at the age of 3 years, he began to cough. This continued all winter but was not thought serious enough to require medical advice. In June, 1926, however, he began to lose weight and to have a slight elevation in temperature. He was then brought to the hospital for examination. Over the base of the right lung, marked dulness with amphoric breathing was found. A diagnosis of abscess of the lung was suggested, although history of the inhalation of