Analyfis of the Air. i 7 7 



Experiment LXIX. 



From a quarter of a cubick inch of An- 

 timony* I obtain'd 28 times its bulk of air. 

 It was diftilled in a glafs retort, becaufe it 

 will demettalize iron. 



Experiment IXX. 



Iprocured a hard, dark, gray Tyriies, a 

 mineral fubftance, which was found 7 feet 

 under ground, in digging for fprings on 

 Walton-heath, for the fervice of the Right 

 Honourable the Earl of Lincoln, at his beau- 

 tiful feat at Oat lands in Surrey ; this mine- 

 ral abounds not oniy with fulphur, which 

 has been drawn from it in good plenty, 

 but alfo with faline particles, which 

 fhoot vifibly on its furface, A cubick inch 

 of this mineral yielded in diftillation 8 3 cu- 

 bick inches of air. 



Experiment LXXL 



Half a cubick inch of well decrepitated 



fea-falt mixt with double its quantity of 



calx of bones generated 32 times its bulk 



of air : It had fo great a heat given it, that 



N ail 



