DISEASES OF THE HOG. 225 



cases of hog cholera all the organs of the body are 

 more or less red spotted, caused by hemorrhage of 

 a greater or less extent. The extravasation of blood 

 is found most abundant in the lymphatic glands 

 and the serous membrane of the chest and abdo- 

 men. The cases vary very much, sometimes the in- 

 testines, both outside and inside, the surface of the 

 lungs, liver, heart and kidneys will be covered with 

 an exudation of blood. On the internal surface of 

 the large intestines in nearly all cases of hog chol- 

 era and swine plague there will be found a num- 

 ber of tufts which receive the name of ulcers; they 

 are elevations of a dirty gray or sometimes a yel- 

 lowish gray; they are more or less hard or tough 

 when cut with the knife; their surface is tufty, 

 somewhat like the top of a wart on the human 

 hand after it has been soaked in water for a while; 

 this surface is covered with a yellowish substance, 

 which is easily removed by scraping off with a 

 knife. These growths extend in some cases through 

 the intestine. In most cases the lining of the in- 

 testine and its walls are black in the vicinity of the 

 growths. These tufts may be single or a number 

 of them may be attached to each other, covering 

 a surface of from one to three inches in length; 

 they are usually found in the cecum, upper half ot 

 the colon and on the ileo-cecal valve. Very often 

 the small intestine is found more or less inflamed 

 and the glands enlarged; in some cases the spleen 

 is enlarged; the lungs are usually more or less im- 

 plicated, especially is this the case in swine plague. 

 I have found some cases of swine plague in which 



