CASE.—Private Harrison H——, Co. E, 53d North Carolina Regiment, aged 29 years, was wounded in the engagement near Washington, D. C., July 12th, 1864, by a conoidal ball, which entered in front of the right branch of the coronal suture, traversed the brain, fractured the posterior angle of the right parietal bone two inches from the occipital protuberance, and lodged beneath the scalp. He was, on July 14th, admitted to the Lincoln Hospital. Brain substance, in a disorganized condition, oozed from the wound. Cold water dressings were applied, and calomel, opium, cathartics, and low diet ordered. On July 19th, the patient rejected all food, became unconscious, and groaned as if in much pain. He was attacked by frequent and severe convulsions, and evacuated urine involuntarily. At times there were lucid intervals of short duration. Strabismus to a marked degree existed. On July 22d, he had improved a little, and on July 24th free incisions were made to evacuate a large amount of pus. The missile and several fragments of the parietal bone were also removed. He continued to improve until July 27th, when hæmorrhage occurred from branches of the meningeal artery, which was arrested by compress. He was now perfectly conscious, but complained of weakness. On the following day convulsions recurred, and continued with increased severity, until death occurred on July 28th, 1864. The autopsy revealed extensive comminution of the right parietal bone in the track of the ball, which was six inches in length; the posterior part of the right lobe of brain was protruding, and in a state of disorganization; the anterior portion was apparently healthy; the pericranium was much thickened and congested. The case is reported by Acting Assistant Surgeon T. L. Leavitt. The pathological specimen is No. 2905, Sect. I, A. M. M., and was contributed by Acting Assistant Surgeon H. M. Dean. Between the wounds of entrance and exit is a bridge of bone two and a half inches wide. The edges of the fracture are necrosed. The surrounding bone is porous, and shows traces of the formation of a line of demarcation.