CASE.—Private Gottleib S——, Co. E, 122d New York Volunteers, was wounded at the battle of Cold Harbor, Virginia, June 4th, 1864, by a conoidal musket ball, which fractured the frontal bone at the coronal suture, just behind the left frontal eminence. He was admitted to the hospital of the 1st division, Sixth Corps, and on June 7th, sent to Lincoln Hospital, Washington. On the following day, the ball and fragments of bone were removed, leaving the dura mater exposed. On June 9th, erysipelas supervened, and death occurred on June 10th, 1864. On opening the scalp at the autopsy, one and a half ounces of blood exuded; the dura mater beneath the injury was firmly covered with blood clots; the left hemisphere of the brain was much congested, and the injured part down the corpus callosum so much contused as to resemble boiled chocolate. The pathological specimen is No. 2539, A. M. M. The opening in the bone is an inch in diameter, the amount of the vitreous table removed being the greater. The ball is traversed by a broad, deep groove from point to base. The specimen was contributed by Assistant Surgeon J. C. McKee, U. S. A.