History.
—Betty F., born April 17, 1913. With the exception of a mild attack of chickenpox two years prior to the accident to be described, the child had had no illness. Her physique was excellent and she was self-reliant and competent to an unusual degree.Sept. 29, 1917, while riding astride her hobbyhorse on the lawn the horse reared over backward and the child fell on her back with her feet still astride the body of the horse. The back of the saddle, 2 inches wide and about 8 inches across, heavily padded with leather, fell directly across her body at the level of the navel. The right side suffered more from the blow than the left, and over the right lower ribs the child thereafter always placed her hand when asked where she was hurt or where she had pain. The accident was seen and the child was helped