i8o Anal^fis 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 
ncceffarii’y 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 Fulvis Fulminans. 
The fcoria of this operation did not run per 
deliquium, a proof that all the SalTartar was 
diftillcd over. 
Prom 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 Sal Tartar^ we fee the reafon 
why it will not go off with an explofive 
force, like thofe when fired. And at the 
fame time we may hence obferve, that the 
air included in nitre and SalTartar, bears a 
confidcrablepart in their explofion. For fca- 
falt contains an acid fpirit as well as nitre ; 
. 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, v;ith fulphur and charcoal. 
Mr. Boyle found that Aquafortis pour- 
ed on a ftrong folution of fait of tartar did 
not 
