Analyfis of the Air. \ 7 9 



Experiment LX. 



From 142 grains of dry Tobacco were raifed 

 153 cubick inches of air, which is little 

 lei's than ■§■ of the whole weight of the To- 

 bacco -, yet it was not all burnt, part being 

 out of the reach of the lire. 



Experiment LXI. 



Camphire is a moil volatile fulphureous 

 fubftance fublimed from the Rofin of a tree 

 in the Eaft-Indies. A dram of it melted 

 into a clear liquor, at fome diltance from 

 the fire, and fublimed in the form of white 

 cryftals, a little above the liquor, it made 

 a very fmall expanfion, and neither gene- 

 rated nor abforbed air. The fame Mr. Boyle 

 found, when he burnt it in vacuo, Vol. II. 

 f. 605. 



Experiment LXII. 



From about a cubick inch of chymlcal 

 Oil of Ani feed, I obtained 22 cubick inches 

 of air 5 and from a like quantity of Oil of 

 Olives, 88 cubick inches of air. Finding 

 that the Oil of Aniieed came plentifully 

 over into the receiver, in the diftilla:icn of 



N 2 the 



