M. C., an Italian woman, aged 45, who had lived fourteen years in New York, beyond the facts that three of her children had died in infancy (three were living and well), that her menopause had occurred at 38, that she had had right sided supra-orbital headache for nearly ten years, and that she suffered somewhat from constipation and "gas," had always been strong and well until thirty-six days before admission to the hospital, March 8, 1923.
She awoke one morning with a severe headache, but worked at household duties for a day or two until a cold in the head, then fever, then cough and then greenish yellow sputum combined to force her reluctantly to bed. The physicians thought that she had influenza and bronchopneumonia, and sent her to the hospital because she was getting worse and they suspected that she had an empyema.
Certain features in her physical