126 MANGE. 



It is obferved to fall chiefly upon thofe that 

 have been almofl: fir angers to the taste of 

 oats^ and are kept entirely on the rejufe of pro-* 

 vender, barren pafture, muHy hay, feparated 

 haybands, fwajnpy mofly ground, or ruJJjy 

 moors; from all which nature may receive 

 ia wretched existence, but cannot be fur- 

 nifhed \n\i\\ fupport-, at Jeaft the fupport ne- 

 cefl'ary to contribute nutritive juices for the 

 conftant healthy fubfiftence of fo large a frame. 

 From this mode of living (or rather ftarving) 

 orisiinates fo fevere and inveterate a difeafe: 

 the economy and law of nature demonjlrates 

 it to a certainty, and renders farther ani- 

 madversion upon the fubjed: tedious and un- 

 neCejfary. For the blood being by this barren 

 contribution robbed of what it was by nature 

 intended to receive, becomes impoveriJJjed t^tn 

 to a degree of incredibility (by thofe u'ho 

 are unacquainted with the fyflem of repletion 

 and circulation); it lofes its teiiacify 2inA baU 

 famic adhefive quality, deeenerating to an acrid 

 ferous vapour that - fequir^ malignity by its 

 preternatural feparation from its original C9r- 

 reBor. Thus extravafated and unreftrained, 

 its morbid effeds and virulence foon difplay 

 themfelves upon the furface, with a fevere 



and 



