Bladder there was but a fmall Stone ; which confirm- 
€th me in the Opinion , that the unfuccefsfulneft 
of his Operations proccedeth from the point of his 
Knife, not being ftopt neither by the Staff nor 
'Stone; for when there is but a fmall Stone, the 
Bladder being empty , he mufl: necelTarily cut the 
whole Bladder throughly, and confcquently cut fome of 
its own VefTels, which caufech the Hemorrhage, 
which is the better voided when the Stone is very 
large. 
Now, S/r, to tell you my Opinion, though I can- 
not approve that way on all occafions yet, I think 
lar Cafes ; give me leave, Sir, to give you an Ac- 
count of my Obfervations about it, fince I received the 
former Account. 
I took a Body, in the Bladder of which I put a 
Stone , the StafI being in the Bladder , I did prefs it 
downward, hard enough as to be felt through the Te- 
guments, and made the Incifion upon it in the bent of 
the Thigh, in order to know whether it would not be 
a furer way by (ecuring the poinf of the Knife by 
that way I got my Condu(9:or and Forceps into the 
Bladder, and drew the Stone very eafily ; but after- 
ward, by the Diflecaion of the Body, I found that 
the Artery of the Penu^ and the Veficula fentina- 
ies were cut through and throughjWhich cannot be avoid- . 
ed,becaufethe Artery and Veficulas lye immediately un- 
der that part of the Bladder which the Staff prefleth , 
upon. 
I took another body, and having put in the Bladder 
a fmall Stone, I made the Incifion much lower, and 
^pierced the Bladder under the Staff', by which fncifr 
it might be fuccefifully 
on 
