The observations on the fluid obtained from a cyst, probably pancreatic in origin, which are here reported, seem worthy of record even though no satisfactory explanatory theory of the findings can be advanced by the observer. The fluid was obtained at operation from a patient who was admitted to the medical service at the Carney Hospital, March 29, 1911, and whose medical record was as follows:
—Carney Hospital Medical No. 2055. Male, aged 42.
—Father died of sarcoma. Mother died of pneumonia. Brother died of bronchitis. Sister died in infancy. No family history of pulmonary tuberculosis.
—Measles, mumps, pertussis, and scarlet fever in childhood. Pneumonia thirteen years ago. Gonorrhea twenty-three years ago.
—Drinks alcohol to excess; chews tobacco.
—Fourteen months ago his right leg between the shoe-top and knee became swollen. Soon after this his abdomen became swollen. He was admitted