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grains, in eggfhell lime-water, the Carlfbad water, 
and in the urine of one who daily drank this laft 
water, renewing thefe feveral menftruums every day, 
he found, on the 15th day, that the calculus in the 
lime-water had loft 1 grain, the calculus in the Carlft 
bad water 6 grains, and that in urine y grains. 
(B) Again, having divided another calculus into 
four parts, each of which was reduced to 80 grains, 
he put the firft in oyfterfhell lime-water, the fecond 
in Carlfbad water, and the third in the urine of a 
perfon who drank this water. After 20 days, during 
which time the menftruums were renewed every 
day, and kept in a heat of 96 degrees, the dried 
calculi had loft of their weight as follows : the firft 3 
grains, the fecond 18 grains, and the third 14 grains. 
Altho’ I make no doubt that Dr. Springsfeid, who 
appears to be a man of candour, as well as learning, 
has faithfully related the event of the experiments, 
which he made ; yet eitjier the lime-water he ufed 
muft have been very weak, or fome other miftake 
muft have happened in his experiments : for in all 
the numerous trials I made, about 15 years ago, of 
lime-water, as a folvent for the ftone, 1 always found 
its diflolving power much greater, than it appears in 
Dr. Springsfeld’s experiments. And as in thefe trials 
different urinary ftones were ufed, it can fcarcely be 
imagined, that it was owing to the peculiar hardnefs 
of Dr. Springsfeld’s calculi, that the lime-water 
made fo little impre'flion on them. However, to be 
ftill further fatisfted of this matter, I made the fol- 
lowing experiments. 
D d d 2 1 . 1 
Ddd 2 
