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i $ 4f Analyfis of the Air. 



ed in the water ; the confequence of which 

 was, that the new generated air continued 

 in a more permanently elaftick ftate, very 

 little of it loiing its elafticity, viz. not a- 

 bovea 15 th or 1 8 th part, and that chiefly 

 the hrft 24. hours ; after which the remain- 

 der continued in a conftantly elaftick ftate ; 

 excepting the air of tartar , which in 6 or 

 8 days loft conftantly above one third of 

 its elafticity 5 after which the remainder was 

 permanently elaftical. 



That the great quantities of air which are 

 thus obtained from thefe feveral fubftances 

 b> diilillation are true air, and not a mere 

 flatulent vapour, I was allured by the fol- 

 lowing tryals } viz. I filled a large receiver 

 which contained 540 cubick inches, with air 

 of tartar i and when it was cool, 1 fufpend- 

 cd the receiver while its mouth was invert- 

 ed in water. Then upon lifting the mouth 

 of the receiver out of water , I immedi- 

 ately covered it by tying a piece of bladder 

 over it. When I had found the exad weteht, 

 I blew out ail the air of tartar with a pair 

 of bellows which had along additional nofe 

 that reached to the bottom of the receiver. 

 And then tying the bladder on, I weighed 



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