(494) 
long preferve its Purity and temperament • in regard that up* 
on its Arrival at the Liver ( which is the grand Organ of San- 
guification wherein the blood receives all us qualiciesjit would 
infallibly lofe all its goodnefs, and in an inftant become hke 
the whole Maffe, which we fuppofe corrupted ; and confe- 
quentlycan produce no benefit therein by its mixture. 
But this Obje(3:ion is ill enough grounded, fince it fuppof- 
eth the blood to be made in the Li ve^ , and is contrary to ex- 
perience which demonftrateth raoft evidently, both theexi- 
ftenceof blood in Animals before the formation of the Li- 
ver, and alfo the Arrival of the Chyle, and at the heart, and 
converfionof the fame into blood therCj before it entreth in- 
to the Veines which carry it to the Liver: wherefore I difmifs 
this reafon and proceed to another, which feemeth ftronger 
and is offer'd by perfons more judicious. 
'lis not contefted in this Objeftion in what place fanguifi- 
catiori is performed, becaufe 'tis held to be done in feveral 
parts of the body^ namely by reiterated circulations in the 
heart , Veines and Arteries : But 'tis Itkewife maintained that 
allthefe parts come either by ficknefs or age^to a certain de- 
gree of intemperature and malignity, from which there is no 
poflibility to recover them 5 and that in this flate they have 
power to communicate their evil qualities to whatfoever ap- 
proacheth them ^ whence confequently in a little time they 
corrupt the laudabteblood, wherewith they are newly irriga- 
ted. Proof of this is afforded both by example, and experi- 
ence. The example is taken from a Ho^^ead ofFmegar^ 
which being once throughly imbu'd with that Liquory is no 
longer fit to conteiu any other, but every thing pour'd there- 
into is immediately infecSted with (oweroefs bycont;2gion of 
the Caske. The experience confifls in that which was lately 
publiiht by an Enghfti Dotftorj who transfufing the blood of 
a Mangie Dog into a found one, to try whether the Mange 
would be communicated with the blood , found theMangie 
Dog cur'd , and the other who had received his blood not to 
become Mangie, 
Now 
