Cattle Plague. 677 



The buccal mucosa is swollen, foetid, with marked epithelial 

 •desquamation and more or less deep and extended erosions on the 

 upper and lower lips, gums, dental pad of the upper jaw, cheeks, 

 hard palate, and root of the tongue. There may still be some of 

 the characteristic, white, epithelial concretions, or the epithelium 

 may hang in loose semi-detached shreds, or there may be exten- 

 sive areas of abrasion, in transverse cracks or broad patches, and 

 .finally extensive petechise. The conical papillae on the cheeks 

 and dorsum of the tongue are especially liable to dark red pete- 

 chial discolorations. 



The subderma and submucosa are also suffused with these con- 

 gestions and petechiae, and like the epidermic layer show a marked 

 increase of all elements and of the cell nuclei. 



The congestions, petechiae. desquamations, erosions, are found 

 ■on the fauces, pharynx, gullet, nasal mucosa, trachea, and bron- 

 -chia, to a greater or less extent in different cases. There may be 

 even limited areas of superficial necrosis and even the formation 

 of false membranes. In the diseased epidermis and epithelium, 

 in the necrotic plaques and false membranes there are spores and 

 mycelia of fungi and bacterial growths. 



In the rumen, reticulum and manifolds, the mucosa and sub- 

 mucosa usually show limited areas of thickening and punctiform 

 or arborescent congestion with softening and even detachment of 

 the epithelium. 



The abomasum is profoundly involved, especially in the vicinity 

 of the pylorus. The folds are of a deep blood red or purple, or 

 .blackish, port wine hue, or they may be in part brownish red, or 

 when necrotic, slate colored or mottled. The peptic glands are 

 swollen, elevated and dilated, and patches and spots of softened 

 and loosened epithelium are easily detached leaving a deep red 

 .surface with, it may be redder oozing points. Ulcerous sores may 

 show on the summits of the folds. The contents are a viscous, 

 foetid grayish yellow, or reddish liquid, without solid ingesta. 



The small intestines show similar lesions, deep, dark red con- 

 gestions, most intense on the summits of the folds, softened, 

 loosened, ragged patches of epithelium, erosions, ulcers, circum- 

 scribed sloughs, casts of the gut formed by desquamating epi- 

 thelium, and congested, enlarged, and prominent agminated and 

 ..solitary glands are more or less in evidence. The contents are 



