

ii 











178 Anahfis of the Air, 



all being (Milled over, the remaining fcoria 

 did not ran per deliquium. I cleared the 

 gun-barrel of thefe and the like fcoria, by 

 (hiking long on the outftde with a hammer. 





it 





Experiment LXXII. 



From 2 1 1 grains or half a cubick inch 

 of Nitre, mixed with calx of bones, there 

 arofe 90 cubick inches of air, /. e. a quan- 

 tity equal to 180 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 5 04 cu- 

 bick inches of air 5 fo the weight of the air 

 i« this Tartar was 14+ grains, /. e. f part 

 of the weight of the whole: The re- 

 maining fcoria which was very little, run 

 per deliquium, an argument that there re- 

 mained fomc Sal Tartar, and confequently 



more air* for 



[b 

 Experiment LXXIV. 



Half a cubick inch or 304 g™ ns of Sal 



Tartar, 



. 



J 



PI 



10* 



HI* 

 111* 



ttwi 



am 



m 



fc; 



■r.tJH 





