—L. S., aged 15, white, schoolboy, was thrown, Feb. 22, 1919, from a load of straw and fell on a three-prong pitchfork. His father, aged 40, was living and healthy. His mother died at the age of 35 of pulmonary tuberculosis. There were two brothers living, 6 and 10 years old, respectively, both healthy. One brother died in infancy. There were no sisters. He had not had any diseases except scarlet fever. He had always been healthy.I reached the patient twenty minutes after the accident. He was entirely pulseless at the radial and temporal arteries. The heart sounds were indistinct. Respiration was 8; the skin was cold and covered with clammy sweat. The pupils were dilated and responded slowly to light. His mind was clear and he was thoroughly conscious. There was one lacerated wound over the pubic bones 3 inches long, through the skin to the bones.