=Alimentary Tract.=--The lesions of the gums so well recognized clinically are fully discussed under symptomatology. The remarkable fact that these hemorrhages do not appear in edentulous gums has been the centre of the controversy as to the identity of adult scurvy and Barlow's disease. This same lack of involvement is noted in adults whose teeth have been extracted. Where teeth are present, the gums are swollen and edematous, often of a livid, reddish color; less frequently, pale and pouting. Hemorrhage is seen at the edge of the gum adjacent to the teeth. In advanced cases the gums are enormously swollen, fungous, ulcerated and covered with a foul, greenish, necrotic mass, which may extend widely over the buccal mucous membrane. The teeth become loosened and fall out. Secondary infection undoubtedly plays the chief rôle in producing this condition, for the most severe forms are found only where caries and pyorrhoea preëxisted. This seat of infection may serve as the source of dissemination throughout the body, giving rise to many of the lesions found at postmortem, especially in the lower part of the intestinal tract. The _stomach_ shows no characteristic changes. Congestion of the mucosa is frequent, at times associated with small superficial erosions; the latter gain added interest in view of their occurrence in guinea-pig scurvy. Hemorrhages occur here also and may involve any of the mural coats. The _duodenum_ shows often intense congestion. This occurs with sufficient frequency to demand attention, especially as a similar condition has been described in other disorders grouped with scurvy. Willcox and others found congestion of the duodenum and of the lower intestine in beriberi, and Andrews described not only congestion but even minute hemorrhages. Small duodenal ulcers are by no means infrequent both in human and in guinea-pig scurvy (Holst and Froelich). The presence of such marked congestion surrounding the papilla of Vater would lead us to expect the occurrence of catarrhal jaundice associated with scurvy. But, on the contrary, icterus has rarely been noted in scurvy. Urizio has described jaundice in this connection, but it is difficult to decide whether his cases were true scurvy, as they occurred in an epidemic of jaundice and no histologic examination of the bones was carried out.