453 
on Spirituous Liquors. 
below o. I heated it up to ioo°, when it was found to rise to 
188 above o. It was afterwards brought to the temperature 
of 6o°, and suffered to remain in that temperature for three 
hours, when it was found to stand at 6 above o. 
It appears from the above experiments, that the contrac- 
tion in cooling down from 6o° to 30°, is 122 -f- 3,5= 125,5 ; 
and on heating it up to ioo°, we have for the total expan- 
sion from 30° to ioo°, 122 + 188 = 310; but it is obvious 
that this total expansion cannot be the true one ; for it ap- 
pears, on suffering the instrument to remain three hours in 
the temperature of 6 o°, that it was found to have collected 
a quantity = 2,5, that had undoubtedly adhered to the upper 
part of the tube when charged, and the fluid having arrived at 
the temperature of 6o° sooner than what adhered could de- 
scend, it was of course left behind on cooling the mixture 
down to 30° ; if therefore that quantity had been collected 
while it remained at the temperature of 6o°, it would have 
stood at 6 above o, and the contraction from 6o° to 30° would 
have been 119,5 + 6 = 125,5 below o ; and the total expan- 
sion from 30° to ioo°, = 119,5 -f 188 = 307,5 instead of 310, 
as was found before ; and differing from the experiments by 
weight 3,07 divisions, in defect. 
The same mixture having been suffered to remain in the in- 
strument, which was hung up as before, the following experi- 
ments were tried two days afterwards. 
Having brought the mixture to the temperature of 6o°, it 
was found to stand in the two tubes at 5,5 above o. It was 
cooled down to 30°, and was found to sink to 120 below o. 
I then heated it up to 6o°, and found the mixture in the two 
tubes to stand at 5,5 above o as before. It was afterwards 
jyiDccxcn. 3 N 
