Aialyfis of the Air. 303 



ftroycd by the water's afcending above z z. 

 And the event was the fame upon frequent 

 repetitions of the fame Experiment. 



But if inftcad of the fumes of burnino- 

 Birmftonc, I filled a Flask full of fumes from 

 the fmoak of wood, after it had done flam- 

 ing, then there was b'ut half as much air 

 abforbed by thofe fumes, as there was by 

 the fumes of Brimftonej viz. becaufe 

 the fmoak of wood was much diluted with 

 the watry vapour which afcended with it 

 out of the wood. And this is doubtlefs the 

 reafon why the fmoak of wood, tho' it in- 

 commodes the lungs, yet it will not fufFocatc 

 like that of Charcoal, which is withal more 

 fulphureous, without any mixture of watry 

 vapours. 



And that new generated elaftick air is re- 

 forbed by thefe fumes, I found by attempting 

 to fire a Match of Brimftonc with a burn- 

 ing glafs, by means of a pretty large piece 

 of Brown Paper which had been dipped 

 in a ftrong folution of Nitre, and then 

 dryed : Which Nitre in detonizing generated 

 near two quarts of air, which quantity of air, 

 and a great deal more, was abforbed, when 

 thcBrimftone took fire and flamed vigorously. 



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