THBOMBO-EMBOLIC COLICS. 



167 



return to a normal figure, but the peristaltic movements are inter- 

 fered with, defecation infrequent, the appetite is diminished, and 

 the general condition is not not entirely satisfactory. After twenty- 

 four or forty-eight hours the fever reappears, with or without being 

 accompanied by slight colics. This condition may last for days 

 and even for weeks (chronic colic) ; Friedberger has seen it persist 

 for three weeks. Id some cases, embolic intestinal catarrh ends in 

 recovery, but it often leads to marasmus and cachexia, if death does 

 not supervene through septic infection. 



4. Chronic course with production of hemorrhagic thrombo-embolic 

 enteritis (intestinal hemorrhagic infarct). The pathology of this 

 hemorrhagic enteritis is very simple ; the embolic obstruction of the 

 small intestinal arteries causes, in circumscribed regions of the mu- 

 cous membrane, those disturbances of circulation previously described 

 — arterial anemia, blood-stasis, hemorrhagic infarct, and necrosis. 



The principal symptoms are the lessening of the appetite or com- 

 plete inappétence, increase of thirst, scarcity of defecation in spite 

 of the persistence of the peristaltic movements; the balls of dung, 

 which are small and dry at the start, become soft, doughy, and 

 later bloody and fetid ; the urine is acid, rich in phosphates and in 

 albumin ; the fever is intense and persistent, 40° C. or higher, pul- 

 sations from 60 to 100, the pulse being small ; the general weakness 

 increases ; the animal loses flesh, the abdomen is contracted ; at 

 certain moments we detect coma and stupefaction. After meals we 

 observe an aggravation of the general condition and of the colic. 

 In some cases we observe remarkable febrile paroxysms (muscular 

 trembling, chills, coldness of the extremities, paleness of the mucous 

 membranes, aud accelerated respiration, which is painful and rat- 

 tling ; there are also tumultuous beatings of the heart, and con- 

 siderable increase of the rectal temperature. 



The duration of hemorrhagic enteritis varies from a few days to 

 several weeks. Its most common termination is death, which may 

 occur from septic infection, or through peritonitis consecutive to 

 perforation of the intestine, or by exhaustion. Recovery, which is 

 extremely rare, may, however, be obtained after elimination of the 

 sloughs, through cicatrization of the lesion. There are cases where 

 transformation into ulcers takes place. The convalescence is always 

 of long duration. 



Autopsy reveals characteristic alterations. The mucous mem- 

 brane of the stomach is swollen, injected, ecchymosed, and dotted 



