[ i8o ] 
general, the air from fngar is abforbed in greater quan- 
tity than that from marble. 
J 
In forcing the air from fugar into the cylindrical 
glafs, no fenfible quantity of moifture was found to 
condenfe on the furface of the quickfilver, or fides 
of the glafs ; which is a proof that no confiderable 
quantity of any thing except air could fly off from 
the fugar and water in fermentation. 
Experiment IV. 
The fpecific gravity of the air produced from fugar 
was found in the fame way as that produced from 
marble. A bladder holding 102 ounce meafures, 
being filled with this kind of air, loft 294 grains on 
forcing out the air, the thermometer ftanding at 62°, 
and the barometer at 294. inches. Whence, fuppofing 
the outward air during the trial of this experiment to 
be 826 times lighter than water, as it fhould be, ac- 
cording to the fuppofition made ufe of in the former 
parts of this paper, the air from fugar fhould be 554 
times lighter than water. Its denfity therefore appears 
to be much the fame as that of the air contained in 
marble j as that air appeared to be 51 1 times lighter 
than water, by a trial made when the thermometer 
was at 45 0 ; and 563 times lighter, by another trial 
when the thermometer was at 65°. 
This air feems alfo to poffefs the property of ex- 
tinguifhing flame, in much the fame degree as that 
produced from marble j as appears from the follow- 
ing experiment. 
Experiment V . 
A fmall wax candle burnt 15 '' in a receiver filled 
with t T of air from fugar, the reft common air. 
6 
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