D. S., a white woman, aged 20, single, was admitted to the Mary Fletcher Hospital, Nov. 19, 1928, at 9 p. m., with a diagnosis of ruptured ectopic pregnancy. While in a store, November 17, the patient was seized with severe abdominal pain, collapsed and had to be assisted to her home. The pain was relieved and she slept well that night. The day of admission she was up and about but felt weak and tired. About 5 p. m., while sitting in a chair, she had another attack of severe abdominal pain and again collapsed. A physician was called, who sent her to the hospital. Her past history was unimportant, except for the birth of an illegitimate child in August, 1924. For the past month the patient had had considerable nausea, especially in the morning. The last menstrual period, October 4, had been normal. she had never had any previous