Heterologous Formation, a. Anomalous occurrence of fatty tissue, of lipomatosis tumors between the gastric membranes, and chiefly in the submucous cellular tissue. - These growth's project into the cavity of the stomach, being either attached by a neck or sessile, and being invested by mucous membrane. Occasionally they pass through the fasciculi of the muscular coat, and present similar tumors under the peritoneum.

b. Anomalous fibrous and fibrocartilaginous tissue - appears chiefly in the vicinity of the cardiac orifice and the lesser curvature, and assumes the shape of flattish, roundish, whitish, tough concretions in the cellular tissue, which are movable and of the size of a lentil or pea.

c. Erectile tissue - is either developed at the free end of polypi, or the mucous membrane degenerates into it on a larger surface, upon which the erectile tumor is attached by a broad base, or only by a very short neck or stalk. It is the common seat of encephaloid infiltration.

d. Tubercle and tubercular ulceration of the stomach - are a very rare occurrence, and primary tuberculosis of the stomach is almost unknown. It commonly occurs as a result of intestinal tuberculosis which has advanced to an extreme degree; the tubercular ulcers extend from the ileum through the jejunum and duodenum into the stomach. They here are generally limited to the pyloric portion, but sometimes extend to the fundus. The remarks we shall have to make on intestinal tubercle apply also to the original seat of tubercle and the character of the tubercular ulcer in the stomach. In the former the mesenteric, in the latter, the lymphatic glands are the seat of tubercular affections, and we may use this as an aid to the diagnosis of a gastric ulcer, the characters of which may not otherwise be sufficiently defined.