Analyfis of the Air. 213 



fpirits 5 for by Experiment 75, they abforb 

 air, which air particles regained their elafti- 

 city, when the acid fpirits which adhered to 

 them were more ftrongly attracted by the 

 gold, than by the air particles. 



Experiment XCI. 



A quarter of a cubick inch of Antimony? 

 and two cubick inches of Aqua-regia, gene- 

 rated 3 8 cubick inches of air, the firft 3 or 

 4 hours, and then abforbed 14 cubick in- 

 ches in an hour or two 5 after which it was 

 ftationary , till I let into the glafs veffel a y 

 (Fig. 34. ) about a quart cf frefii air : Upon 

 which it abforbed fo fail, as to make the 

 water rife very vifibly in ay % whereby it ab- 

 forbed 30 cubick inches more. It is very ob- 

 fervable, that air was generated while the 

 ferment was fmall, on the fir ft mixing of the 

 ingredients: But when the ferment was 

 greatly increafed, fo that the fumes rofe 

 very vifibly, then there was a change made 

 from a generating to an abforbing Hate; that 

 is, there was more air abforbed than gene- 

 rated. 



P j That 



