On the Animal Calculus. 249 
28. To conclude, the foregoing Experi- 
ments, as they fliew us the Nature of the Stone 
in the Kidnies and Bladder^ and the Caufes 
from whence they arife j fo they may proba- 
bly be of ufe, if not in leading us to the hap- 
py Difeovery of a fafe Diffolvent, yet at lead: 
they may ferve to caution us to avoid fuch things 
as are moft likely to produce them, and direct 
us in the Ufe of fuch Meats and Drinks, as 
will be moft ferviceable in preventing its 
Growth. 
15). For tho* notwithftanding the Urines 
pf all Perfons have tartarine Matter in them, as 
is plain from the Adhefions to Urinals, 
yet far the greateft part of Mankind are never 
troubled with the Stone ; and tho" moft Per- 
fons have Sand, yet not many have the Stone 
in the Kidnies, and fewer in the Bladder : It 
feems therefore not unreafonable to think chat 
if by proper Meat and Drink and other 
Precautions, the tartarine Quality of their U- 
rine who are fubjeft to the Stone could be fonie- 
what abated 5 that then, they like others 
might be free from the fird; beginnings of ir. 
But when once any Gravel is formed, it then 
too readily increafes. For which reafon it is a 
Matter of great Importance to ufe all proper 
Means, 
