101 
Analyfis of the Atf. 
From the great quantity of air generated 
from Apples^ in the following Experiment, 
’tis probable, that much more air would 
have rifcn from the laxer texture of ripe 
undryed Grapes, than did from thefe Rai- 
hns. 
W e fee from thefe Experiments on Rai- 
EnsandAle, that in warm weather Wine 
and Ale do not turn vapid by imbibing 
air, but by fermenting and generating too 
much, whereby they are deprived of their 
enlivening principle, the air i for which rea- 
fon thefe liquors are beft preferved in cool 
cellars, whereby this afUve invigorating 
principle is kept within due bounds, which 
when they exceed. Wines are upon the 
fret and in danger of being fpoiled. 
Experiment LXXXVII. 
Twenty-fix cubick inches of Apples be- 
ing maflied Auguft lo. they did in 13 days 
generate 968 cubick inches of air, a quam 
tity equal to 48 times their bulk 5 after which 
they did in 3 or 4 days reforb a quantity 
equal to their bulk, notwithftanding it was 
very hot weather; after which they were 
I ftationary:, 
