4th. The fact that hospital gangrene appeared in the stockade first; and originated spontaneously without any previous contagion, and occurred sporadically all over the stockade and prison hospital, was proof positive that this disease will arise whenever the conditions of crowding, filth, foul air and bad diet are present. The exhalations from the hospital and stockade appeared to exert their effects to a considerable distance outside of these localities. The origin of hospital gangrene among these prisoners appeared clearly to depend in great measure upon the state of the general system induced by diet, and various external noxious influences. The rapidity of the appearance and action of the gangrene depended upon the powers and state of the constitution, as well as upon the intensity of the poison in the atmosphere, or upon the direct application of poisonous matter to the wounded surface. This was further illustrated by the important fact that hospital gangrene, or a disease resembling it in all essential respects, attacked the intestinal canal of patients laboring under ulceration of the bowels, although there was no local manifestations of gangrene upon the surface of the body. This mode of termination in cases of dysentery was quite common in the foul atmosphere of the Confederate States Military Hospital in the depressed, depraved condition of the system of these Federal prisoners. 5th. A scorbutic condition of the system appeared to favor the origin of foul ulcers which frequently took on true hospital gangrene. Scurvy and hospital gangrene frequently existed in the same individual. In such cases, vegetable diet, with vegetable acids, would remove the scorbutic condition without curing the hospital gangrene. From the results of the existing war for the establishment of the independence of the Confederate States, as well as from the published observations of Dr. Trotter, Sir Gilbert Blane, and others of the English navy and army, it is evident that the scorbutic condition of the system, especially in crowded ships and camps, is the most favorable to the origin and spread of foul ulcers and hospital gangrene. As in the present case of Andersonville, so also in past times when medical hygiene was almost entirely neglected, those two diseases were almost universally associated in crowded ships. In many cases is was very difficult to decide at first whether the ulcer was a simple result of scurvy or of the action of the prison or hospital gangrene, for there was great similarity in the appearance of the ulcers in the two diseases, so commonly have these two diseases been combined in their origin and action, that the description of scorbutic ulcers, by many authors evidently includes also many of the prominent characteristics of hospital gangrene. This will be rendered evident by an examination of the observations of Dr. Lind and Sir Gilbert