Anal^fis of the An\ 187 
Oy(krfhdl,Oak,Muftard-feed, Indian- wheat, 
Pcafc, Tobacco, oil of Annifecd, oil of Olives, 
Honey, Wax, Sugar, Amber, Coal, Earth, 
Walton Mineral, fea Salt, Salt-petre, Tar- 
tar, SalTartaty Lead, Minium. Thegreatefl; 
part of the Air obtained from all which bo- 
dies was very permanent, except what the 
Air of Tartar loft in ftanding feveral days. 
Particularly, that from nitre loft little of 
its elafticity, whereas moft of the Air ob- 
tained from nitre, in diftilling with the re- 
ceiver { Fig. 3 3-) was reforbed in a few days, 
as was alfo the Air which was generated from 
detonized nitre in Experiment 102. Hence 
alfo we fee the reafon, why 19 parts in 20, 
of the Air which was generated, by the firing 
of Gunpow’der, was in 1 8 days reforbed by 
the fulphureous fumes of the Gunpowder, 
As Mr. Hawks bee obferved, in his phyfico- 
mechanical Experiments, page 83. 
In the diftillation of Horn, it was obfer- 
vable, that when towards the end of the ope- 
ration the thick foetid oil arofe, it formed 
very large bubbles, with tough unftuous skins, 
which continued in that ftate fome time 5 
and when they broke, there arofe out of 
them volumes of fmoak, as out of a chimney, 
and 
