CASE 7.—Private Harrison Tibbetts, Co. A, 12th Mass.; age 24; was admitted June 1, 1862, with chronic diarrhœa. He recovered and was acting as wardmaster when, on October 11, be was attacked with diphtheria, which proved fatal on the 19th. Post-mortem examination: The pharynx, tonsils and velum palati were covered with false membrane and the larynx was lined throughout with the characteristic exudation. On the left side of the lower part of the larynx was an abscess containing about three ounces of offensive pus. The parotid glands were much enlarged and the surrounding cellular tissue œdematous.—Hospital, Alexandria, Va.