C 903 ] 
obferved, that lime-water has no folvent power upoft 
gall flones. Hence we draw another proof of the 
analogy of lime-water with Carlfbad water. 
If it fhould be wondered at, how it comes to pafs 
that the urine of thofe who drink thefe waters fhould 
have the power of diffolving the ftone, it is necelfary 
to mform our readers, that this urine contains nearly 
tiie fame properties which the water originally had. 
It has before been obferved, that thefe waters are 
impregnated with an alcaline principle, and confe- 
quently ferment with acids. The urine of thofe 
who drink them, if made before dinner, has the 
very fame quality as our author has frequently ex- 
perienced ; efpecially if the accuftomed quantity of 
water is taken, and nothing elfe is drank upon them. 
The cuftomary dofe at Carlfbad is not lefs than fix, 
feven, or eight pints of water taken every morning : 
for which reafon we are not to wonder that the urine 
has the property of diffolving the flone in the kid- 
neys and bladder, if it is long retained. And our 
author makes no fcruple, but that the injection of 
thefe waters into the bladder would be very powerful 
in relieving calculous complaints ; though this he 
had never tried ; neither was he much induced there- 
to, as the urine is poffefled of all the powers which 
he was in fearch of. 
It remains that we juft take notice, by what means 
thefe waters are poffeffed of their folvent power. It 
is well known, that acids, more efpecially mineral 
ones, do diffolve animal calculi, by a&ing upon their 
terreflrial parts, dividing their maffes, and becoming 
neutral thereby. Thefe effects do not arife from 
alcalies, as they leave terreflrial fubflances untouched. 
5 Y 2 If 
