R. B., a married woman, aged 22, who had been in previous good health, had had measles at 2, chickenpox and mumps at 6, whooping cough at 7, and typhoid at 9. In an automobile accident at the age of 14, two upper middle incisors were lost. Three and one-half years before examination she had had a miscarriage of a five months fetus. She had one living child, aged 22 months, who was healthy. Menstruation, of the twenty-eight day type and of three days' duration, began at 12. The patient's father was alive and well. Her mother had chronic interstitial nephritis.
Dec. 6, 1927, the patient was seized with acute abdominal pains, colicky in type and localized to the right lower quadrant of the abdomen. She also complained of nausea and vomiting and of a chilly sensation following the onset. She was admitted to the hospital, December 7, and operation was performed at once.