(3) 
probable tkat the cooler blood of the found Dog, alaying the 
excreame heate of the other , may work the cure j afcribing 
the Difeafe to the Trao fpiration of corrupted blood, and that, 
to an extraordinary heat* But the blood being fuppofed to be 
vitious, to prevent its diiSatioa by cooling, were fooner to 
introduce death, than a remedy 5 befides, Traufpiration is noc 
the efFe<a of heat effeftive, but excitative only * for the blood 
is properly volatiz'd by the Vital fpirit and its own Ferment, 
whofe operation is more powerful than that of Fire ; for Glafs 
held for the laftacft of Fire, is really further reducible by the 
help of Ferment into water; So then the ad:ion of extream 
heat(fuch as is fuppofed here) would rather have deficcated and 
and fixt the blood than have mov'd it to Traufpiration ; Be ic 
then properly the aft of the Vital fpirit and Ferment, and 
not of heat 3 and confequently no need of cooling in our 
cafe. 
Now as to the Difeafe it felf, I take it to be the excretion of 
an Acid fait from the blood, cloRn^ with Hippocrates J cUum^ 
j^cr^^ Amarum^ Fonticum^^c. for Morbifick caules. This hoftil 
Acidity (as we fee in Tartar of Wine , which is no other than 
a congelation of the Acetous part of the Wine into Salt,j be- 
ginning fome degree of fixation of the volatile Salt of the 
bloody contrary to the fcope and intention of Nature, which 
is, to have it totally volatil and tranfpirable \vithout any foeces , 
is by the prepotency of the Viral fpirit and Ferment,driven out 
together with the half fix'd Salt into the skin, where for want 
of volatility, it flicks and turns to the Mange. Hencel fuppofe 
that if the found Dog had been coupled up with theotherfor 
fome time , he had been more likely to have received his con- 
tagion , than by the Transfufion of blood. 
The Experience upon the youth labouring of a violent fever 
and cur'd by immiffion of the Arterial blood of a Lamb into 
his veine, is more obfervable, as being more applicable to pra- 
ctice ; now As to the fever ; I take it for a Maxime, ^dquid 
in fatiis edit aBiones fanas^idtpfum in morbis edit aHiones vitiatas. 
But in health the vital Spirit naturally vi^armes a man, the fame 
Spirit therefore if/Zi^^^i'j^ in a fever , vehemently ftriving to cx- 
B pel 
