CASE.—Private Christopher C. Colson, Co. A, 37th Massachusetts Volunteers, aged 24 years, was wounded at the battle of the Wilderness, Virginia, May 6th, 1864, by a conoidal musket ball, which fractured the left parietal bone. He was admitted to the hospital of the 2d division, Sixth Corps; and thence, on the 25th, he was sent to the Armory Square Hospital at Washington. The case progressed well under ordinary treatment. On June 16th he was transferred to the Knight Hospital, New Haven, Connecticut; on October 16th to Readville, Massachusetts; and on March 22d, 1865, he was returned to duty from the Dale Hospital, Worcester, Massachusetts. Persistent hemicrania of the left side, however, rendered him unfit for duty, and, on May 23d, 1865, he entered the Lincoln Hospital, at Washington, and was mustered out of service June 12th, 1865.