Pamphlet. Fair. Large Octavo. 12 pages. Offprint from The Proctologist and Gastroenterologist, Vol. 10, No. 3 (Sep. 1916). Reprint No. 100 from "Studies from the Research Laboratory" at Parke, Davis & Co. Front cover is browned around the edges; back cover is browned more severely and has silverfish hole. Condition is better than it sounds: text is clean and binding is tight.