CASE.—Private Charles S. Mattox, Co. H, 12th Pennsylvania Reserves, aged 20 years, was wounded at the battle of Spottsylvania​ Court-house, Virginia, May 10th, 1864, by a conoidal ball, which fractured and depressed the left parietal bone. He was brought to the Emory Hospital, Washington, on the 13th, in an almost senseless condition. On the 18th, Surgeon N. R. Moseley, U. S. V., removed the depressed bone and applied cold water dressings. The patient revived and continued to improve until the 21st, when he suddenly relapsed into a comatose condition, and died on the following day. The history was contributed by Surgeon N. R. Moseley, U. S. V.