[ 39i ] 
daily, his Lordfhip’s urine reduced, in four months 
a piece of calculus , weighing 3 1 grains, to three 
fmali bits, weighing in all 6 grains *f*. Whence it 
follows, that the diffolving power of his Lordfhip’s 
urine mufl have been to the diffolving power of the 
urine of the perfon who drank the Carlfbad waters 
nearly as 35 to 65 £. But if we confider, that the 
calculus infufed in the urine of the perfon who drank 
the Carlfbad waters was kept always in a heat of 96 
degrees, while in Dr. Newcome’s experiment, which 
was made during part of the autumn and winter, 
no artificial heat was ufed, it will appear probable, 
that the diffolving power of his Lordfhip’s urine was 
little inferior to that of the perfon who drank the 
Carlfbad waters > for lime-water, in a heat of 96 
degrees, diffolves the calculus at lead: twice as faft, 
as in the common heat of the air in winter. Further, 
if it be attended to, that the quantity of Carlfbad 
waters drank every day before dinner is from fix to 
eight lib. while his Lordfhip only drank four lib. 
of lime-water in 24 hours, it will follow, that 
whatever the different diffolving powers of the lime- 
water and Carlfbad waters may be out of the body, 
yet the former feems, in proportion to the quantity 
drank, to communicate at lead: an equal diffolving 
power to the urine. 
But without prefuming to decide certainly, as to 
the comparative virtue of the Carlfbad waters and 
lime-water, I fhall conclude with obferving, that 
tho’ the Carlfbad waters are lefs difagreeable to the 
tafle,. 
t Eflay on Lime-water, 2d edit. p. 208, &c, 
X Ibid. p. 176 and 177. 
