262 THE STEPPE DISEASE. 



severity of the symptoms; the diarrhoea is not severe, and 

 there is a pustular eruption over the body, or a desquama- 

 tiori of cuticle. The convalescence is long, and may last 

 several weeks. 



Post-mortem Appearances. These have been very care- 

 fully studied and described by Dr E611, of the Vienna Vete- 

 rinary School, Jessen, Spinola, Brefeld, &c., &c. The lesions 

 are peculiar in three different stages. 



In the first, or catarrhal stage, the mucous membrane of the 

 fourth stomach, especially near the pylorus, as well as the 

 lining of the small intestine, is swollen ; there is a uniform 

 colour or redness around the glandular follicles, and red 

 spots or streaks on the membrane. The neighbourhood of 

 the glands both solitary and agminated is red, swollen, 

 and open. The surface of the membrane is covered with a 

 viscid, tenacious, reddish or bloody secretion, which is more 

 or less mixed with the intestinal contents, and in the sub- 

 mucous tissue there is a turbid semi-fluid exudation. In 

 the large intestine the lesions are few. There is a general 

 redness of the ccecum, as there is of the mucous membranes 

 in other parts of the body, such as in the sinuses of the head, 

 in the trachea and bronchial tubes, urinary and generative 

 organs. The lesions of the first stage, says Roll, are not 

 characteristic of the disease, as they indicate a catarrhal con- 

 dition of the stomach and intestine which may exist in other 

 diseases, but coupling the above lesions with the history of 

 a number of similar cases occurring one after another in any 

 place, they may materially assist in determining the nature 

 of the disease affecting any stock. 



In the second stage the morbid lesions are more charac- 

 teristic. There are numerous patches of yellow exudation 

 most abundant in the neighbourhood of Peyer's patches, but 

 also seen in the fourth stomach, near the pylorus. In the 



