Analyfis of the Air . 3 09 
Thus alfo oil of Vitriol and Chalk ge- 
nerate air, their fume being fmall, and that 
much diluted with the w.atry vapours in the 
Chalk. 
But Lime with oil of Vitriol, or White- 
Wine Vinegar or Water, make a confidera- 
ble fume, and abforb good quantities of air : 
Lime alone left to flaken gradually, as it 
makes no fume, fo it abforbs no air. 
We fee in Experiment 92, where the fer- 
ment was not very fudden nor violent, nor 
the quantity of abforbing fumes large, that 
the Antimony and Aqua-fortis generated a 
quantity of air equal to 520 times the bulk 
of the Antimony? thus alfo in the mixture 
oi Aqua-regia md Antimony, in Experiment 
9 1, while at firft the ferment was fmall, then 
air was generated 5 but when with the in- 
creafing ferment plenty of fumes arofe, then 
there was a change from a generating to an 
abforbing ftate. 
Since we find fuch great quantities of elaf- 
iick air generated in the folution of animal 
and vegetable fubftances; it muft needs be 
that a good deal does conftantly arife, from 
the dhfolving of thefe aliments in the ftomach 
and bowels, which diffolution it greatly pro- 
motes : Some of which may very probably 
X3 be 
