211 Amlyfis of the Atr. 
A cubick inch of finely powdered Flinty 
and an equal quantity of compound Aqua- 
fortiSy abforbed in 5 or 6 days 12 cubick 
inches of air. 
' Equal quantities of powdered 
mondy and compound Aqua-fortisy and Water 
abforbed 16 times their bulk of air. 
The like quantities without water ab- 
forbed more flowiy 7 times their bulk of 
air. 
Brijiol Marble [viz. the (hell 
in which thofe diamonds lay) covered 
pretty deep with watery neither generated 
nor abforbed air 5 and it is well known that 
Briftol water does not fparkle like fome 
other Mineral waters. 
Experiment XCIX. 
When Aqua-regia was poured on Oleum 
Tartari per T)eliquium much air was gene- 
rated, and that probably chiefly from the 
Oleum Tartari s for by Exper. 74. Sal Tar- 
tar has plenty of air in it. 
It was the fame when oil of Vitriol was 
poured on OL Tartari^ and OL Tartari drop- 
ped on boyling generated much air. 
;When 
