178 Analyfts of the Air. 
all being diftilled over, the remaining feoria 
did not run per deliquium, I cleared the 
gun- barrel of thefe and the like feoria, by 
ftriking long on the outfide with a hammer. 
Experiment LXXII. 
From 21 1 grains or half a cubick inch 
oi Nitre, mixed with calx of bones, there 
arofe 90 cubick inches of air, i. e, a quan- 
tity equal to 1 80 times its bulk 5 fo the weight 
of air in any quantity of nitre is about ^ part. 
Vitriol diftilled in the fame manner yields 
air too. 
Experiment LXXIII. 
From a cubick inch or 443 grains of 
Renijh Tartar, there arofe very faft 504 cu- 
. bick inches of air $ fo the weight of the air 
in this Tartar was 144 grains, /. e, f part 
of the weight of the whole: The re- 
maining feoria which was very little, run 
per deliquitim, an argument that there re- 
mained fome Sal Tartar, and confequently 
more airj for 
1 Experiment LXXIV. 
Half a cubick inch or 304 grains of Sal 
Tartary 
