286 RINDERPEST 



are usualh' the seat of congestion or ecchymoses either beneath 

 the capsule or in their structure. There are also parenchyma- 

 tous changes. The liver may be pale, congested, engorged 

 with blood or ecchymotic beneath the capsule. The bile is 

 thin. There are more or less parenchymatous changes in the 

 liver cells. The lymphatic glands generally are usually 

 enlarged and the mesenteric glands are often hyperemic or 

 even hemorrhagic. 



The structures most often affected are the mucous mem- 

 branes of the digestive, respiratory and genito-urinary tracts 

 and the skin. 



Nodules and pustules are sometimes found on the skin, 

 especially on the udder. The mucous membrane of the mouth 

 and pharynx is congested in spots, swollen and exhibits 

 rounded, yellowish grey, caseous plates or deposits. The 

 removal of the plates discloses ulcerous and highly congested 

 depressions in the mucous membrane, the so called erosion 

 ulcers. These changes are best marked on the inner surface 

 of the lips, lower surface of the tongue, buccal mucous mem- 

 brane and gums of the inferior maxilla. 



In the first three stomachs the mucous membrane is 

 usually congested in spots and the epithelium is so loose that 

 it can be easily detached. The contents of the rumen and 

 reticulum are soft and those of the omasum are often dried, a 

 condition that is met with in many other diseases. In some 

 cases the contents of the omasum are fluid. Generally the 

 abomasum is empty, and contains only a small quantity of 

 tough, muco-purulent, yellow or sanious material. Its mucous 

 membrane is highly congested, especially in the neighborhood 

 of the pyloric orifice. The congestion is partly diffuse, parth^ 

 in spots, in the form of points or streaks. Its color may be 

 purple or reddish-brown with a tinge of slate-grey. The 

 epithelium exfoliates. On the mucous membrane may be 

 found small, brownish-yellow, caesous deposits, in the form of 

 plates, which become detached in shreds, leaving indented, 

 highly reddened areas which are studded with petechiae. The 

 glands (peptic and mucous glands) of the stomach are swollen 

 and show considerable cellular hypertrophy. Like changes 



