TUMORS OF THE RUMEN AND RETICULUM. 



Tumors of different kinds have been found in the walls of 

 these organs, though b\- no means frequently. Epithelial h\'per- 

 troplu' and pajjillonia have been found in the ox the former 

 undergoing necrotic changes. Cliondroma is reported by Kitt, 

 Sarcoma by Cadeac and Beylot. There seems to have been a 

 special tendency to invade the demicanal, and to interfere with 

 deglutition, rumination, and the passage of food into the third 

 stomach. The impairment and loss of appetite and of rumina- 

 tion, the presence of tympany, and the general loss of condition 

 are suggestive. If the disease of the demicanal leads to anti- 

 p-i'ristaltic movements of the oesophagus which can be felt by the 

 hands pressed on the jugular furrows the diagnosis may ])ossibly 

 be made. 



Treatment is manifestly hopeless. To be effective it mu.st be 

 surgical and would too often entail excision of the affected part 

 of the viscus and careful suture of its walls. This would be even 

 more hopeless when the demicanal was the seat of disease. 



Temporary palliation migiit be secured by a sloppy diet, the 

 withholding of all rough food which would demand rumination, 

 and the use of common salt, saline laxatives and abundance of 

 water. 



ANIMAL PARASITES OF THE RUMEN AND 

 RETICULUM. 



Infusoria. Aiiiphistoniuin Conicuin. Actinomycosis. Tumors : Papilloma, 

 Chondroma, Sarcoma. Treatment — palliation or surgical. 



Colin describes and figures as many as eight varieties of in- 

 fusoria found habitually in the first two stomachs. All appear to 

 be introduced with the food, in the infusions of which they also 

 appear, and they find in the fermenting mass of ingesta in the 

 first two stomachs a favorable medium in which to grow and 

 nuiltiply. It cannot be shown that the}' are in any way detri- 

 mental and they have even been supposed to be beneficial to 

 digestion as glycogen has been demonstrated in their protoplasm. 



