44 RINDERPEST. 



He subsequently dissected sixteen cows, in "different 

 degrees of infection," first five, in whom tbe " symptoms 

 were just become visible," then six that bad " been ill about 

 two days," and five that " were very nearly dying." 



Ill the Jirst set " the gall bladders were larger than usual, and filled 

 with bile of a natural taste and smell, but of a greener color. The 

 pancreas was shriveled ; some of the glands were obstructed and 

 tumefied; many of the glands in the mesenteries were twice or 

 thrice their natural size. Their lungs were a little inflamed ; all other 

 parts of their viscera appeared as in a healthful state." In the 

 second set the following differences and aggravations were found. 

 " The livers were blacker than usual, and in two of them there were 

 several cysts filled with a petrified substance like chalky about the 

 size of a pea ; gall of a greener color than the first. Some of the 

 glands were very large and hard; the mesenteries five times their 

 natural size, and all of a .blackish color. Lungs inflamed, with 

 several cysts forming. Their intestines were full of red and bluish 

 spots. Their flesh was very hot, though not altered in color." In 

 the third set he noticed the following changes, to wit : " Liver now 

 much shriveled and contracted, and in three of them there were 

 several cysts as large as nuts or nutmegs, filled with a petrified sub- 

 stance like chalk ; gall bladders three times their usual size, &c. ; 

 mesenteric glands, eight or ten times their natural size, were very 

 black, and in most of those glands in the pelvis of two cows there 

 was a yellow petrifaction of the consistence of a sandstone. Intestines 

 of the color of a snake, their inner coat excoriated by purging. 

 lAings more infl^amed, with cysts containing yelloxo purulent matter, 

 many as large as a nutmeg." 



The dissections of these three classes of subjects were quite uni- 

 form ; but Bates notices three cases as "very extraordinary " — one 

 in which " the bile was petrified in its vessels and resembled a tree of 

 coral, but of a dark yellow color and brittle substance." In another, 

 "were several inflammations on the liver, some as large as a half- 

 crown, cracked round the edges, and appeared separating from the 

 second part, like a pestilential carbrmcley In the third, " the liquor 

 contai7ied in the pericardium appeared like the subsidings of a(iua 

 calcis, and had excoriated and given as yellow a color to the whole 

 surface of the heart and pericardium, as aqua calcis could possibly 

 have done." 



Aside from the admitted fact that this pestilence was both 

 infectious and contagious, and that the virus was commu- 



