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 lot 



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187 



Oyftcrlhcll,Oak,Muftard-f€cd,Indian- wheat, 

 Peafc, Tobacco,oil of Annifeed, oil of Olives, 

 Honey, Wax, Sugar, Amber, Coal, Earth, 

 JValton Mineral, Tea Salt, Sait-pctrc, Tar- 

 tar, Sal Tartar, Lead, Minium. Thcgreatcft 

 part of the Air obtained from all which bo- 

 dies was very permanent, except what the 

 Air of Tartar loft in Handing feveral days. 

 Particularly, that from nitre loft little of 

 its elafticity, whereas moll of the Air ob- 

 tained from nitre, in diftilling with the re- 

 ceiver ( Fig. 33.) was reforbed in a few days, 

 as was alio the Air which was generated from 

 dctonized 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 Gunpowder, was in 18 days reforbed by 

 the fulphureous fumes of the Gunpowder. 

 As Mr. Hawksbee oblervcd, in his phyfico- 

 meehanical Experiments, page 83. 



In the diftiilation of Horn, it was obier- 

 vablc, that when towards the end of the ope- 

 ration the thick foetid oil arofe, it formed 

 very large bubbles,with tough unctuous 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 





1 1 



