318 “Experiments and Obfervations © 
fide of the bell. Seven ‘ounce meafures of atmos 
fpheric air were then introduced into the jar through 
_ the water in which it was inverted, care being taken 
that the height of the water within the glafs fhould 
be on a level with that in the bafon; which point : 
was exactly marked on the outfide. The barometer 
at the fame time ftood at 30, 25 inches; the ther- 
mometer at 54, 5°. In the {pace of eighteen hours 
’ the barometer had rifen to 30, 31 inches, the ther- 
= Mmometer being at bs, 5°; and the water inclofing 
“\° the air appeared above the mark. . Upon fhaking 
‘the jar, the air contracted, which could only be oc- 
cafioned by the abforption of Carbonic Acid Gas 
. uniting with the agitated water: At the end of fixty- 
fix hours, the grain had fprouted as much as could 
be ‘expected in the time. It was judged neceffary 
to put an end to the experiment, becaufe .the baro- 
meter and thermometer ftood exadtly at 30,25 
inches, and 54,5°. ‘The height of the water in the 
jar was carefully marked in the next place, and the 
contents of that part of the veffel, lying between 
this point and that fixed on at firft, being accu- 
rately afcertained, it aoe that the air, in con- 
ta& with the barley, had loft zo of its original balk. 
The diminution would undoubtedly have been 
made ftill greater, by expofing it to lime water, but 
I did not purfue the fubje& any farther at that 
time, being contented for the prefent with deter- 
mining the vegetative procefs to differ effentially 
from the vinous fermentation; for the Carbonic 
Acid 
