CASE.—Private George H. C——, Co. H, 64th New York Volunteers, aged 17 years, was wounded at Petersburg, Virginia, March 25th, 1865, by a conoidal ball, which entered midway between the centre of the left clavicle and the sterno-cleido-mastoid muscle, passed inward and backward, grazing the posterior portion of the upper lobe of the left lung, passed through the bodies of the third, fourth, and fifth dorsal vertebræ, and was found lying loosely on the sixth rib, right side. He was treated in the field hospital, and, on the 30th, was sent to Lincoln Hospital, Washington. Tonics and stimulants were administered. Death occurred on April 5th, 1865. The necropsy revealed the course of the ball. The upper lobe of the left lung and the lower lobe of the right were found to be very much congested. There was some effusion on the right side. The pathological specimen is No. 4082, Section I, A. M. M., and was contributed, with the history of the case, by Acting Assistant Surgeon J. P. Arthur.