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were fo greatly increafed for many months before he 
fubmitted to the operation, as to quite difable him 
from riding, from walking, or from ufing any kind 
of exercife. His urine, of late, was continually and 
involuntarily flowing from him in fmall quantities. 
He complained of great pain and forenefs in his fun- 
dament, attended with a tenefmus. This account he 
delivered to me on the fecond day after the operation ; 
and at the fame time he very feelingly told me, that 
he had enjoyed but very few and fhort intervals of 
eafe for the three laft years, till fince the operation. 
On the 30th of January 1758, I cut him, at his 
own houfe in Suffex, having firft prepared him 
for the operation in the manner, that is ufual upon 
the like occafion. In the operation, I extracted 
the four ftones, which I now have the honour of 
laying before the Royal Society. The whole fur- 
faces of thefe ftones appear to be rough, not having 
the leaft marks of ever having rubbed againft each 
other during their confinement in the bladder : but 
yet I conjecture this muft frequently have been the 
cafe, as there was no difficulty in embracing thefe 
calculi with the forceps : for had they been con- 
tained in different cells or pouches in the bladder, 
which fometimes have been obferved from diffeCtions, 
this circumftance would, in all probability, have ren- 
dered it impracticable for me to have fo immediately 
got at them, if at all. 
The forceps was introduced only three times into 
the bladder for effecting the extraction of the three 
firft ftones, and only twice for the extraction of the 
fourth ftone. Befides thefe four ftones, which I have 
prefented to the Society for their infpeCtion, I thought 
it 
