Analy/is of the Air. 305 



And in Experiment 95, there are feveral 

 inftances of the air's being in like manner 

 abforbed in leffer 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; and alfo 

 filings of Iron and Water; powdered Flint 

 and Compound Aqua-fortis ; powdered Bri- 

 ftol 'Diamond with the fame liquor, 



It is probable from Experiment 103 and 

 1 06, 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 veffels, 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 abforbing, 

 it generated air, the parts of the Compound 

 Aquafortis were then more at liberty to 

 act by being diluted with an equal quantity 

 of water ; whereby the ferment being 

 more violent; the particles which confti- 



X tuted 



