Anafyfis of the Air. 203 



ftationary, neither reforbing nor generating 

 air in many days. 



A very coarfe brown-fugar, with an equal 

 quantity of water, generated nine times its 

 bulk of air $ Rice-flower fix times its bulk ; 

 Scurvy-grafs leaves generated and abforbed 

 air; Peafe, Wheat and Barley did in Fer- 

 mentation alfo generate great quantities of 

 Air. 



That this Air, which arifes in fuch great 

 quantities from fermenting and diilblving 

 vegetables is true permanent Air, is certain, 

 by its continuing in the fame expanded 

 elaftick ftate for many weeks and months 5 

 which expanding watry vapours will not 

 do, but foon condenfe when cool. And 

 that this new generated air is elaftical is 

 plain, not only by its dilating and contraft- 

 ing with heat and cold, as common air does^ 

 but alfo by its being compreffible, in propor- 

 tion to the incumbent weight, as appears by 

 the two following Experiments, which fhew 

 what the great force of thefe aerial parti- 

 cles is, at the inftant they efcape from the 

 fermenting vegetables. 



Ex- 



