THE STEPPE DISEASE. 263 



latter organ, the dullish red or violet-coloured patches, where 

 the membrane is thickened considerably, occur chiefly 

 towards the free edges of the mucous membrane. The 

 deposit occurs beneath and around Peyer's glands, and is 

 then of a yellowish brown or reddish tint. The glands have 

 a perforated appearance, and at all the apertures there are 

 little, yellowish white plugs of exudation which are readily 

 squeezed out. In the vicinity of these deposits there is 

 a sort of catarrh or secretion from the mucous membrane. 



In very severe cases the free surface of the mucous mem- 

 brane of the small intestine, extending over one or more 

 feet, is covered by a discharge of a greyish or dirty red colour. 

 A. similar slimy secretion is seen in the ccecuin sometimes, 

 as well as in the colon and rectum, where there may be red- 

 ness of the mucous folds, which is apt to be mistaken for 

 excoriations. 



In some lean-conditioned animals the exudation on the 

 surface of the mucous membrane is not seen. There is a 

 tenacious albuminous, yellowish white or reddish brown 

 fluid deposited in or beneath the mucous membrane of both 

 small and large intestines. Peyer's glands seen thus, appear 

 swollen and perforated. 



In the third stage the exudations before referred to, get 

 loose from their periphery towards the centre. They become 

 soft, and when still adherent at the centre, especially at the 

 seat of Peyer's patches, there are floating masses of this exu- 

 dation, which at last get quite free, and are discharged with 

 the excrements. The portions of membrane from which 

 these sloughs have separated are red and ulcerated, but the 

 ulcers are not usually deep. 



In a Russian report on this disease* two coloured plates 



* Bericht uber die ersten Tmpfungen der Rinderpest &c., c. St. 

 Petersburg, 1854. 



