1 8 o Analyfis of the Air . 



air from the ftrongly adhering particles ] 

 than is found requifite to raife the air from 

 nitre. Whence the air of Sal Tartar muft 

 necefTariiy thereby acquire a greater elaftick 

 force, and make a more violent explofion* 

 than that of nitre. And from the fame rea- 

 fon it is, that Aurum Fulminans gives a 

 louder explofion than VPuPuis Fulminans. 

 The fcoria of this operation did not run per 

 deliqiiium, a proof that all the SalTartar was 

 diftilled ever. 



From the little quantity of air which is 

 obtained by the diftillation offea-falt in Ex- 

 periment 71. in comparifon of what arifes 

 from nitre and SalTartar, we fee thereafon 

 why it will not go off with an explofivc 

 force, like thole when fired. And at the 

 fame time we may hence obferve, that the 

 air included in nirre and Sal Tartar , bears a 

 confidcrablepart in their explofion. For lea- 

 falt contains an acid fpirit as well as nitre 5 

 and yet that without a greater proportion 

 of air does not qualify it for explofion, tho' 

 mixed like nitre in the compofition of gun- 

 powder, with fulphur and charcoal. 



Mr. Boyle found that Aquafortis pour- 

 ed on a ftrong foliation of fait of tartar did 



not 



