History of Animal Plagues. 215 



and their flesh felt hot. All other parts of their viscera appeared 

 as in a healthftd state. 



'The next six that I opened had been ill about two days. In 

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

 were several cysts filled with a petrified substance like chalk, 

 about the bigness of a pea. Their gall-bladders were about 

 three times their usual bigness, and filled with bile of a natural 

 taste and smell, but of a deep green colour. The glands in their 

 mesenteries were many of them distended to eight or ten times 

 their natural bigness, were very black; and in the pelvis of most 

 of those glands in two cows there was a yellow petrifaction of 

 the consistence of a sandy stone. Their intestines were the 

 colour of a snake, their inner coat excoriated by purging. Their 

 lungs were much inflamed, with several cysts containing a vellow 

 purulent matter, many of them as big as a nutmeg. Their flesh 

 was extremely hot, though very little altered in colour. 



' I have here only given you a general account of my dissec- 

 tions in the three different stages of the disease ; for as the differ- 

 ence was but small and the disease incurable, it could neither be 

 useful nor pleasant to the reader to have each particular dissec- 

 tion at larffe, thouo;h I have now the minutes bv me. But the 

 following cases being very extraordinary, I could not omit the 

 mention of them, viz. : in one of them the bile was petrified in 

 its vessels, and resembled a tree of coral, but of a dark yellow 

 colour and brittle substance. In another there were several in- 

 flammations on the edges of the liver, some as large as a half- 

 crown, cracked round the edges, and appearing separated from 

 the sound part like a pestilential carbuncle. In a third, the 

 liquor contained in the pericardium (for lubricating the heart in 

 its motions) appeared like the subsidings of aqua calcis ; and 

 had excoriated, and given as yellow a colour to tiic whole surface 

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

 done. 



* In giving my opinion of this distemper, I must beg leave to 

 premise that all cows have naturally a purgation by the anus for 

 five or six weeks in the spring, from (as the cow-keepers term 

 it) the firmness of the grass; during which time they are brisk 

 and lively, their milk becomes thinner and of a bluish colour, 



