KPJZOOTICS IN THK XVIII CKN TURY. 11 



In 1730, Bohemia, Saxony, and the Duchy of Mag- 

 deburg, were visited by a similar pestilence, the first 

 symptom of which is described to be " a white blister 

 that appeared on the tongue of the affected animals." 



In 1745 the cattle of Italy, France, Germany, and 

 England were destroyed by thousands ; and it is worthy 

 of observation, that this disease seems to have been 

 very analagous to, if not identical with, pleuro-pncu- 

 monia. By some authors it is said to have been brought 

 from Holland by certain calves imported into the 

 vicinity of London by a farmer for the purpose of cross- 

 ing the breed ; while others assert that the lucrative 

 views of an' English tanner, who bought a parcel of dis- 

 tempered hides in Zealand which were forbidden to be 

 sold, was the origin of the affection. 



A very good account of the malady has been left 

 to us by Dr. Barker, who in his description of the post- 

 mortem appearances, says, " I have constantly' found 

 the bloodvessels of the lungs stuffed up, and distended 

 with grumous or coagulated blood, and the bronchia or 

 air-vessels so much inflated as to make the bulk of the 

 lungs appear much larger than usual. And though 

 some of these cattle were opened before the body was 

 cold, or the blood congealed in the other vessels, yet 

 in those of the lungs it was constantly found to be coa- 

 gulated to such a degree, as not to flow out of the ves- 

 sels upon cutting them*." 



We have already made mention of an affection 

 described by Rammazini to be the small-pox, which 

 committed fearful ravages among the sheep at Modena 



* An account of the present epidemicid distemper amongst Black 

 Cattle (London, 1745.) 



