308 Anahjfis of the Ah\ 
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 5 thus alfo in the mixture 
oi Aqua-regia and Antimony, in Experiment 
91, while at firft the ferment was fmall, then 
air was generated^ but when with the increaf- 
ing ferment plenty of fumes arofe, then there 
was a change from a generating to an abforb- 
ing (late. 
Since we find fuch great quantities of 
claftick air generated in folution of animal 
and vegetable fubftances; it muftncedsbe 
that a good deal does conftantly arife, from 
the diffolving of thefe aliments in the ftomach 
and bowels, which diflblution it greatly pro- 
motes : Some of which may very probably 
be re-fcrbed again, by the fumes which arife 
with them; for we fee in Experiment 83 
that Oyfter-fhell and Vinegar, Oyfter-fhell 
and Rennet, Oyfter-flicll and Orange juice. 
Rennet alone, Rennet and Bread, firft generat- 
ed and then abforbed airj but Oyfter-fiiell with 
fome of the liquor of a Calve’s ftomach which 
had fed much upon Hay, did not generate air ; 
and it was the fame with Oyfter-fliell and 
Ox 
