2 1 6 Analyfis of the Air. 
fortis, abforbed in 5 or 6 days 12 cubick 
inches of air. 
Equal quantities of powdered Briftol 
4 Diamond, and compound Aqua-fortis, and 
Water abforbed 1 6 times their bulk of air. 
The like quantities without Water ab- 
forbed more (lowly 7 times their bulk of 
air. 
Powdered Briftol Marble {viz. the (hell 
in which thofe 'Diamonds lay) covered pret- 
ty deep with Water, neither generated nor 
abforbed air 5 and it is well known that 
Briftol Water does not fparkle like feme 
other Mineral Waters . 
Experiment XCIX. 
When Aqua Regia was poured on Oleum 
Tartan per deliquium much air was gene- 
rated, and that probably chiefly from the 
Oleum Tartari', for by Exper. 74. Sal Tar- 
tar has plenty of air in it. 
It was the fame when oil of Vitriol was 
poured on Oleum Tartari ; and Oleum Tar - 
tari dropped on boiling Tartar generated 
much air. 
When equal quantities of Water and oil 
of Vitriol were poured on fea fait it ab- 
forbed 1 5 cubick inches of air $ but when 
in 
