Royal Society. 345 
and wider, having many large teeth within 5 tht Urethra^ 
with which he draws the land, or grave], that remains lonie- 
times in the bladder after the ftone is out, is ihorter than 
ours 5 his knife is much longer and flendei-er than ours. 
Hecaufes the patient to lie flat upon his back, either upon 
his bed or upon a table, whereon is a foft quih in luch a man- 
ner that the fundament is three or four fingers over the table, 
while fonie fervants fupport his thighs and legs ; he ufes no 
ligature, but only caules his legs to be bent againft his thighs, 
but not the thighs againft his belly, except the left, which in 
the operation h^ ufes more or lefs, as he thinks proper 3 then he 
introduces the catheter, or ftaff, into the bladder, which tho' 
bigger and fhorter than ours, yet feems to run in eafier j very 
often he holds it himfelf in his left hand, pre{ring it clofe 
towards the fundament, in order to dilate and extend the 
membranes of the bladder ; then he feels with the fingers of 
his right hand to find out the ftaff thro' the fkin, and having 
felt it, he runs hisincifion-knife at the bending of the lefr thigh 
upon the fat protuberance below the Ifcbiim, dirc6^1y up- 
wards by the ReBum to the bladder, which he pierces at the 
neck, and fcmetimes a little above it ; when he performs, the 
catting parts of his knife are turned upwards and downwards 5 
having thus pierced the bladder, which he knows by the urine 
running out, he turns bis knife, and thrulls a little further, in 
order to open the bladder wide enough, that his finger may go 
in eafily, then withdrawing his knife, he enlarges the wound 
in the outward parts two or three inches long, after which he 
thrufts his finger into the bladder, in order to know more pre- 
cilely the bignefs and fituation of the ftone, and make it loofe, 
but chiefly to dilate the aperture of the bladder by tearing its 
membranes, then he introduces his ConduBor into the bladder 
along his finger, which is within it 5 when the ConduEior is m the 
bladder, he takes the ftaff out, and introduces the Forceps by 
the Condutlor into it, with which he gets hold ot the ftone, and 
draws it out 3 if he finds any difficulty either in getting hold of 
the ftone, or in drawing it out, he takes all the uiual methods, 
as raifing the left thigh more or lefs, putting his finger into the 
fundament, and fometimes into the bladder to loofen it, m 
cafe there be any adhefion with the membranes 5 having found 
out, and removed the caufe of the difficuhy, he thrufts the 
Forceps again into the bladder, gets hold of the ftone, and 
cxtra6ls it. 
Vol, IIL X x I« 
