1. Two cases of gunshot wound of the abdomen: illustrating the use of rectal insufflation with hydrogen gas as a diagnostic measure Author(s): Senn, Nicholas, 1844-1908, author Publication: Philadelphia : Lea Brothers & Co., [1888?] Subject(s): Wounds, Gunshot -- surgeryInsufflation -- methodsHydrogen -- therapeutic useAbdomen -- surgeryDigestive System Surgical Procedures