r 4°s ] 
circumftances that feem to concur in doling the 
bleeding orifices. 
It has been queftioned whether blood-letting can 
be properly recommended in haemorrhages, excepting 
in thole that are attended with evident ligns of ple- 
thora : but do not thefe experiments fhew, that a 
vein may be opened with propriety, even where there 
is no plethora , in order fuddenly to bring on weak- 
nefs ; by which the momentum of the blood may be 
fo diminifhed, and the dilpofition of the lymph to 
coagulate may be fo increafed, as to flop the hae- 
morrhage ? For, when we confider how foon the blood- 
_ veffels contract, and adapt themfelves to the quanti- 
ty of blood which they contain, it feems not impro- 
bable that in fome cafes where the haemorrhage is not 
profufe, but long-continued, the ftrength of the 
patient may be fo recruited, that the dilpofition tQ 
-coagulate (hall not be fufficiently increafed, or the 
extremities of the veffels fufficiently contracted, for 
the flopping of the bleeding; but, by emptying 
the veffels fuddenly, this effedt may be produced, 
nnd the haemorrhage may be flopt by the lofsof lefs 
blood, than would have happened, had only the flow 
draining been continued. 
Although the whitifh cruft is fo commonly feen 
in inflammatory diforders, and has fo very morbid 
an appearance, as might induce us to confider it as 
inflammatory, and to bleed repeatedly in all thole 
cafes where it occurs, yet I believe we fhould adt 
improperly : for, to fay nothing of pregnancy, in 
haemorrhage. Her refourees indeed are great, and fhe has often 
more methods than one of producing the fame effedt. 
which 
