Analjfis of the Ah\ 30I 
^ And in Experiment 95> there are fevcrj^l 
inftances of the air’s being in like manner 
abforbed in lefler degrees, by other ferment- 
ing mixtures ; As in the mixture of Spirit 
of Harts- horn with filings of Iron, and with 
filings of Copper: And Spirit of Sal Am- 
moniac with filings of Copper 5 and alfo 
filings of Iron and Water; powdered Flint 
and Com^onviA Aqita-fortis h powdered 
ftol T>iamond with the fame liquor. 
It is probable from Experiment 103 and 
1D6, where it was found that the thicker 
the fuliginous vapours were, the fafter they 
abforbed the air, that if the above-mentioned 
fermenting mixtures had not been confined 
in clofe veffcls, but in the open air, where 
the vapours would have been lefs denfe, that 
in that cafe much lefs air would have been 
abforbed, perhaps a great deal lefs than was 
generated. 
In the fecond cafe of the Walton mineral, 
Experiment 96, when inftead of abforbingi 
it generated air, the parts of the Compound 
Aqua fortis were then more at liberty to 
aft by being diluted with an equal quantity 
of water 3 whereby the ferment being 
more violent, the particles which confti- 
X tuted 
