Amlyfis of the Air. 173 
the Air took up no more room than before 
it was heated : whence I was allured, that 
no Air arofe, either from the lubftance of 
the retorts, or from the heated Air. 
As to animal fubfiances , a very confide- 
table quantity of permanent Air was pro- 
duced by diftillation, not only from the 
blood and fat, but alfo from the mod folid 
parts of animals. 
Experiment XL 1 X. 
A cubick inch of Hog's blood \ diftiiled to 
dry fcoria, produced thirty three cubick in- 
ches of Air, which Air did not arife till the 
white fumes arofe 5 which was plain to be 
feen by the great defcent of the water at 
that time, in the receiver az y (Fig. 33.) 
Experiment L. 
Lefs than a cubick inch of Tallow , be- 
ing all diftiiled over into the receiver azy 
(Fig* 3 3-) produced 18 cubick inches of 
Air. 
Experiment LI, 
241 Grains, or half a cubick inch of the 
tip of a follow Peer's horn , being diftiiled 
in the iron retort, made of a musket bar- 
1 rel,, 
