374 ESSAYS ann OBSERVATIONS 
As thefe experiments and conclufions ap- 
peared inconfiftent: with what I had advan- 
ced, the Doéfor has endeavoured further to 
weaken the credit of my experiments, by fome 
arguments drawn, chiefly, from the imperfe- 
tion of the hydroftatical balance, and:from 
the nature of quick-lime and its water. In 
order therefore to know whether J might not 
have been miftaken in what I had faid, con- 
cerning the ftrength of different lime-waters, 
I thought it neceflary to make fome new ex- 
periments; an account of. which I beg leave 
to lay before the fociety. 
I. (2) Havine got from my ingenious — 
friend Mr. Fames Gray, a cylindrical copper- 
veflel ending in a narrow neck, which con- 
tained exactly roo cubical inches; I filled 
it with the fountain-water of this city, and, 
by means of a very nice balance, found it 
weighed 25320 Troy grains *, befides the 
weight of the veffel itfelf, which amounted to 
13055 grains. (6) I 
* According to Mr Cray’s experiments, the water Which 
this veffel contains, only weighs 23518 grains. 7. ¢. two 
grains lefs than we have made it. See above, p. 201. 
This difference may have arifen from our having put a few 
more drops of water into the veffel than Mr Gray did. But 
altho’ 
