236 On the Animal Calculus. 
5>. The fame with the like Qiiantity of Oil 
of Vitriol generated a hundred and ninety 
eight Cubes, of which a hundred and twenty 
four were reforbed in feven Days. 
10. A hundred and forty fix Grains of In- 
cruftation of a Tea Kettle from Water that’ 
came from Chalk at Bajlngjloke in Hamp- 
Jhire^ generated with Spirit of Salt a hun- 
dred and twenty fix cubic Inches of Air, of 
which feventy two loft their Elafticity in feven 
Days. This Incruftation was depoficed in (uch 
Plenty from the Water, that in the Space of 
two Years the Cruft was half an Inch thick. 
11. Hence we fee that thefe Incruftations 
are of a tartarine Nature : They adhere alfb 
like Tartar^ not only as Sediment to the bot- 
tom but alfo to the Sides of Veflels : Whence 
we may not unreafonably conclude, that ma- 
ny Waters which produce thefe, have Prin- 
ciples in them, which may promote the 
Growth of the Stone in the Kidnks and Blad~ 
der. For wdiich Qiiality fome Waters are 
more remarkable than others, as thofe of Pa- 
riSy which fo fur up the Pipes, with thefe 
tartarine Incruftations that the Water cannot 
pafs. And it is w'ell known that the Inha- 
bitants of Paris are more fubjedl to the Stone 
