Patient.
—A boy, aged 17, was first seen about 3 p. m. Nov. 3, 1908. He had been thrown and dragged some distance in a collision between his wagon and a street car.
Examination.
—Patient had been given morphin, gr. ¼, and was resting quietly. He had no severe pain, breathing was regular; pulse was 88, regular, rhythmic, and of good volume. There were numerous skin abrasions over the lower back, left thigh and knee; none in left kidney region; some swelling was apparent just below the crest of the left ilium, which latter showed preternatural mobility, with crepitus and considerable pain on manipulation. Apparently there was a transverse fracture just below the crest. The patient was examined for other injuries but none was found. He had not voided urine so that diagnosis of injury in the urinary tract was held in abeyance. The left side of the pelvis was