(490 
immediately into the Veins of the receiving Animal, and there 
mixing and circulating with the reft, carries good nourilh* 
raentto the principal parts, which are not ordinarily iudifpo- 
icd in ficknefs and old a;ge, but by the vitiofity and faultinefs 
of the blood which humefteth them. 
This is an, Opinion which I fee many Phyfitians embrace , 
and were any thin^ capable to make me renounce ic, the Ear» 
reloi Vtnegary above mention'd muft not be ic. For if fbrver' 
tiBfs be the laft quality which Wine aflumes, and (as I may fay) 
its Death, fince it is never recoverable from the fame , I do 
hot believe that a like quality is to be found in the bloodj that 
is to fay, which corrupts the blood in fuch manner that it can 
never be purifi'd , unleffc perhaps in fome Difeafes accounted 
incurable, which arc not pertinent to the Queftion. But if 
comparifons be currant , let us rather confider Wine with all 
iorts of other qualities but fowernefs, and then our compa- 
rifons will in my opinion, fall more juft. For as the roughefi 
Wine may be fweetned, the fowleft clarified, the weaieft be* 
come ftronger,the Oylie rid it felf of its fatnefs^in a word,thac 
which \% decay 'd may be amended by mixture of certain jt- 
quors, known to thofe that have the fecrets of them, and 
pradlife the fame every day : In like manner/tis rcafonable 
to;conceive that blood too thick may be refined andfubtili*' 
fedj that too fubtle be fixed and incraflated, that too hot be 
temper'dj that too cold be heated ; and all this by the mixture 
of other forts of blood , the particular qualities whereof are 
known to the Phyfician whoprefcribes theTr««//tt/(3«. 
As for the Experiment of theD^^, which is faid to have re- 
ceiv^d the corrupted blood of another Mangie one without 
coiitrafting his difeafe ^ many things of fufficient importance 
may be (aid to it. i; Is there any affurance that the blood of 
the Mangie Dog wss putrened, and corrupte4 iti his Veins ? 
On the contrary might it not have been purified before, by 
difcharging its impurities through the pores of the flefli;, 
where the fame was converted into Mange upon the Skip* 
That wbi^h confirms mc the more in this particular^ is, that 
very 
