Analyfis of the Air. 225 
(Fig. 55,) incrcafed in weight by imbibing 
the floating moifture of the air : But they 
abforbcd no eiaftick air. It was the fame with 
the remaining lixivtous Salt of a diftiliation 
of Kitre. 
But 4 or 5 cubick inches of powdered 
frefh Cynder of Newcajlle Coal did in feven 
days abforb 5 cubick inches of eiaftick air. 
And 1 3 cubick inches of air were in 5 days 
abforbed by Tulvis Urens^ a powder which 
immediately kindles into a live ColCp upon 
being expofed to the open air. 
Experiment CII. 
What cfFed burning and flaming bodies, 
and the refpiration of Animals have on the 
air, we fhall fee in the following Experi- 
ments, 
I fix d upon the pedeftal under the inver- 
ted glafs z z a a (Fig. 35.) a piece of 
Brown Bapevy which had been dipped in a 
folution of NitrCy and then well dryed I 
fet fire to the Paper by means of a bur- 
ning glafs : The Nitre detonized and burnt 
briskly for fomc time, till the glafs zz a a 
was very full of thick fumes, which extin- 
guii]icd 
