C 216 ] 
It would feem, while Lord Walpole ufed only one 
pint of lime-water and one third of an ounce of 
foap daily, that the petrifying quality of his urine 
was not intirely deftroyed, and that the ftony par- 
ticles newly formed on the furface of the calculi oc- 
casioned, by their roughnefs, the return of his pain- 
ful fvmptoms. However, when he had recourfe to 
the medicines in a larger quantity, the petrefcent 
quality of his urine was not only deifroyed, but this 
fluid feems to have acquired a power of diflolving 
the rough ftony particles depolited on the lurface of 
the calculi ; and in this way i'oon removed the pain, 
bloody urine, and frequent deiire to make water, 
upon ufing any confiderable exercife. 
Soap and lime-water not only relieve the painful 
Symptoms occafioned by the hone, by wearing off 
its fharp points, and rougher parts, which ufed to 
irritate the tender membrane, which lines the blad- 
der - y but, when this membrane has been wounded or 
lacerated by the ftone, there is nothing, that will heal 
it more fpeedily than lime-water ; which the ingeni- 
ous Dr. Langrifh has found to be remarkable alio fol- 
ks effeds in curing the bladders of dogs, after being 
fretted with foap-lees ( 1 1 ). 
The power of foap and lime-water to alleviate 
the painful fymptoms attending the Hone is fo great, 
that, as far as I remember, I have only met with one 
patient, who did not find himlelf conliderably re- 
lieved by them. But it is to be obferved, that this 
patient neither took them in full quantity, nor per- 
illed in their ufe for a long enough time : and, 
when he was afterwards cut, the ftone taken out of his 
( 1 1 ) Phyfical Experiments, p. 19. 
bladder 
