Analyjis of the Ait. 309 



Thus alfo oil of Vitriol and Chalk gene- 

 rate air, their fume being fmall, and that 

 much diluted with the watry vapours in the 

 Chalk. 



But Lime, with oil of Vitriol, or White- 

 Wine Vinegar or Water, make a confiderable 

 fume, and abforb good quantities of air: 

 Lime alone left to flaken gradually, as it 

 makes no fume, fo it abforbs no a jr. 



We fee in Experiment 92. where the fer- 

 ment was not very fudden nor violent, nor 

 the quantity of abforbing fumes large, that 

 the Antimony and Aqua- fort is generated a 

 quantity of air equal to 520 times the bulk 

 of the Antimony. Thus alfo in the mixture of 

 Aqua Regia and Antimony, in Experiment 

 91. while at firft the ferment was fmall, then 

 air was generated ; but when with the in- 

 creasing ferment plenty of fumes arofe, then 

 there was a change from a generating to an 

 abforbing ftate. See Vol. II. p. 292. 



Since we find fuch great quantities of ela- 

 flick air generated in the folution of animal 

 and vegetable fubfrances, it muft needs be, 

 that a good deal does conftantly arife from 

 the diflblving of thefe aliments in the ftomach 

 and bowels, which diflblution it greatly pro- 

 motes: Some of which may very probably 



X 3 



