CASE.—Private James Carr, Co. G, 6th United States Cavalry, aged 24 years, fell from his horse on July 6th, 1863, receiving a wound of the frontal region with fracture, and depression of the inner table of the skull. He was admitted to Carver Hospital, Washington, on July 24th, in an irritable, morose, and restless condition. Three days subsequently he was slightly delirious, and respiration was difficult. In the afternoon he became completely unconscious, with insensible pupils and stertorous breathing, and death ensued in a few hours, on July 27th, 1863. The autopsy revealed a depression of the inner table of the frontal bone, and an abscess immediately beneath, filled with sanious pus, and surrounded with plastic lymph. Many of the sulci were adherent, and patches of lymph were distributed on the anterior and middle lobes of the brain. Surgeon O. A. Judson, U. S V., reports the case.