[ 4°6 ] 
which the appearance is almoft conftant, there are 
few phyficians that have not feen patients, who, 
even in fuch circum fiances, have been the worfe for 
this evacuation. Nor need we be furprifed that this 
fhould happen, confidering how foon in fome in- 
fiances this fize difappears ; and if fo, may we not 
fuppole, that it may likewife loon be formed, even 
by a fhort exertion of ftrength in the veffels ? Per- 
haps this was the cafe in the gentleman mentioned in 
page 399, who, in lefs than twenty-four hours after 
bleeding, had fymptoms of great weaknefs. 
As it appears from the above related experiments, 
that the dilpofttion of the blood to coagulate is in- 
creafed by bleeding, it may perhaps be uleful to 
attend to this circumftance, and to compare the 
coagulation of the blood in the 1 aft, with that in the 
firft cup, even in cafes that are not attended with* the 
inflammatory cruft. And it may likewife be worth 
while to make the fame comparifon in thofe cafes 
where every cup has a cruft ; which frequently hap- 
pens in rheumatic, and likewife in phthifical com- 
plaints. By thefe means we may judge what effect 
the evacuation has produced on the ftrength or 
fulnefs of the veffels ; and may perhaps, by attend- 
ing to the laft cup, if it contain only a fmall quan- 
tity, be able to guefs pretty nearly at the nature of 
the' blood which remains in the body. In the rheu- 
matic cafe mentioned in page 391, every cup con- 
tained this cruft ; and although the blood in the laft 
cup coagulated in much lels time than that in the 
firft, yet as it was later in coagulating than common. 
I fufpedted what remained in the veffels had the fame 
4 difpofition 
