









( 



214 Analyfis of the Air. 



That I might find whether the air was ab- 

 forbcd by the fumes only of the Aqua-regia, 

 or by the acid fulphureous vapours, which 

 afcended from the Antimony , I put a like 

 quantity of Aquaregia into a bolthead b, 

 (Fig. 34.) and heated it by pouring a large 

 quantity of hot water into the ciftcrn x x, 

 which flood in a larger vcflel, that retained 

 the hot water about it , but no air was ab- 

 forbed ; for when all was cold, the water 

 flood at the point z, where I firft placed it: 

 Yet in the diftillation of compound Aqua- 

 fortis, Exper. 75. a little wasabforbed. Hence 

 therefore it is probable, that the greateft 

 part, if not all the air, was abforbed by 

 the fumes, which arofe from the Antimony. 



Experiment XCII. 



Some time in February, the weather very 



cold, I poured upon a quarter of a cubick 



Inch of powdered Antimony, a cubick inch 



of compound or double Aqua-fort is in the 



bolthead b } (Fig. 34.) in the firft 20 hours 



it generated about 8 cubick inches of air ; 



after that, the weather being fomewhat 



warmer, it fermented faftcr, fo as in 2 or 3 



hours 



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