422 ESSAYS AND OBSERVATIONS 



the (Irength of lime water cannot be in- 

 creafed by flaking new made lime in it ; 

 becaufe the water can take up no more of 

 the lime than It had before *. 



As thefe experiments and conclufions 

 appeared inconfiftent with what I had ad- 

 vanced, the Do6lor has endeavoured fur- 

 ther to weaken the credit of my experi- 

 ments, by fome arguments drawn, chief- 

 ly, from the imperfeclion of the hydro - 

 llatical balance, and from the nature of 

 quick-lime and its water. In order, there- 

 fore, to know whether I might not have 

 been miftaken in what I had faid, con- 

 cerning the flrength of different lime-wa- 

 ters, I thought it necelTary to make fome 

 new experiments ; an account of which 

 I beg leave to lay before the fociety. 



I. (a) Having got from my ingeni- 

 ous friend Mr James Gray, a cylindrical 

 copper- vefTel ending in a narrow neck, 

 which contained exadlly loo cubical inch- 

 es ; I filled it with the fountain-water of 

 this city, and, by means of a very nice 



balance. 



* Diflsrt. on quick-lime, p. 1 1, 



