REPORT OF CASE A woman, aged 30, admitted to St. Luke's Hospital in December, 1916, had had a severe abdominal pain about four hours before admission, and had fainted. On admission, she was in shock, and was bathed in cold perspiration; the pulse was almost imperceptible, but could be counted at the apex with the stethoscope, the heart rate being 152 a minute. The abdomen showed a b[ill]ardlike rigidity. There was a mass in the left fornix, and as the patient had skipped her last menstrual period a diagnosis of ruptured ectopic pregnancy was made. As her condition was becoming worse rather than better, she was operated on without delay. Hypodermoclysis needles were inserted under both breasts before the administration of nitrous oxid gas. A midline incision was rapidly made. The abdomen was found full of blood. The bleeding ruptured left tube, together with the ovary, was removed. At the