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ilomach, guts, and urinary palfages ; and have ai- 
eribed the remarkable eafe, which they almoft al- 
ways give to calculous patients, to their depofiting a 
calcarious powder upon the furface of the done, by 
which it is rendered lefs hurtful to the bladder. And 
this opinion feems to have been not a little flrength- 
ened, by the great quantity of white fediment ob- 
ferved in the urine of thofe patients, who have ufed 
foap and lime-water in confiderable quantities. Now, 
as I am of opinion, that mod: of thefe objections 
and doubts, concerning the effeCts of foap and lime- 
water in the cure of the ftone, may be cleared by a 
candid confideration of Lord Walpole's cafe, I fhall 
trouble you with a few remarks, which have oc- 
curred to me, in comparing it with the appearances 
found in his Lordfhip’s body after death, of which 
you were fo obliging as to fend me a particular ac- 
count. 
i. Whatever doubts may have been entertained 
concerning the caufe of Lord Walpole’s complaints, 
yet it now appears evidently beyond difpute, that 
they mud have been owing, not to a fcorbutic cor- 
rohve humour in his bladder, as was imagined by 
fome (i), but to hones lodged in it. Thefe hones 
may pohibly have lain there lince 17344 for from 
that time to fpring 1747, his Lordfhip was free of 
any gravelifh complaints, only pahing fome red fand 
at times. But at what time foever they may have 
find arrived in the bladder, in 1747 and 1748 they 
(1) Philofoph. Tranfaft. Vol. xlvii. p. 48. and E/Iay on the 
Virtues of Lime water, &c. edit. 2d. p, 197. 
feem 
