









#. 



Anahjfis of the Air. 



^-4 



fuch as phofphorus and brown paper dipped 

 in water, ftrongly impregnated with nitre 

 and then dryed. 



Sometimes I lighted the candle or large 

 matches of brimftone before I whelmed the 

 «lafs z z a a over them, in which cafe I 

 inftantly drew up the water to a a, which 

 by the expanfion of the heated Air would 

 at fir ft fubfide a little, but then immediately 

 turned to a rifuig ftate , notwithstanding the 

 flame continued to heat and rarify the Air 

 for 2 or 3 minutes : As foon as the flame 

 was out, I marked the height of the wa- 



after which the water would for 

 20 or 30 hours continue rifing a great deal 



above z z. 



Sometimes when I would pour violently 



fermenting liquors, as aquafortis, &c. on 

 any materials, I fufpended the aquafortis in 

 a viol at the top of the glafs veffel zzaa, 

 m fuch manner, that by means of a firing, 

 which came down into the veffel x x, I 

 could by inverting the viol pour the aqua- 

 fortis on the materials, which were in a 

 veiVel on the pcdcftaL 



i {hall now proceed to give an account 



of the event of a great many Experiments, 



which 



5 



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ter z z\ 



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'{81. 



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pics 





tto 



hi 



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