CASE.—Private Adam W. Zimmerman, Co. B, 184th Pennsylvania Volunteers, aged 30 years, was wounded at the battle of Petersburg, Virginia, June 22d, 1864, upon the left side of the head, near the sagittal suture, by a conoidal musket ball, which passed directly backward, tearing up the scalp and fracturing the parietal bone. He was immediately admitted to the hospital of the Second Corps, and thence conveyed to Alexandria, and admitted on July 4th into the 2nd division hospital. On July 13th, he was transferred to the Broad and Cherry Streets Hospital at Philadelphia. Soon after, a fragment of bone, measuring one and one-fourth inches in length by three-fourths in width, was removed. On July 18th, he was sent to the Summit House Hospital, and thence, on August 24th, transferred to the Satterlee Hospital, where, on October 20th, another piece of bone of nearly the same size, including a portion of the inner table three-fourths of an inch in diameter, was removed. An extensive incision of the scalp was now made to secure a ready discharge of pus. Other small scales of bone were removed as they became detached; otherwise the case progressed satisfactorily. The wound had fully cicatrized by the middle of March, 1865, and the patient was discharged from service on May 6th, 1865. The case is reported by Surgeon Isaac I. Hays, U. S. V. In 1869, he was a pensioner, his disability being rated permanent. The right arm and leg were partially paralyzed.