1 8o Analyjis of the Air. 



the Oil of Olives, I raifed the neck of the 

 retort a foot higher ; by which means the 

 Oil could not fo eafily afcend, but fell back 

 again into the hotteft part of the retort; 

 whereby, as well as on account of the lefs 

 volatile nature of this Oil, more air was 

 feparated ; yet in this cafe good ftore of Oil 

 came over into the receiver ; in which 

 there was doubtlefs plenty of unelaftick 

 air : Whence, by comparing this with Ex- 

 periment 58, we fee that air is in greater 

 plenty feparated from the Oil, when in the 

 Muflard-feed, than it is from exprelTed or 

 chymical Oil. 



Experiment LXIII. 



From a cubick inch, or 359 grains of Ho- 

 ?iey, mixed with calx of bones, there arofe 

 144 cubick inches of air, or 41 grains, viz: 

 a little more than ~ part of the weight of 

 the whole. 



Experiment LXIV. 



From a cubick inch of yellow Bees-wax, 

 or 243 grains, there arofe 54 cubick inches 

 of air, or 15 grains; the j% part of the 

 whole. 



Expe- 



