Analyfis of the Air. 2 29 
imbibing the floating moifture of the air : 
But they abforbed no elaftick air. It was 
the fame with the remaining lixivious Salt 
of a diftillation of Nitre . 
But 4 or 5 cubick inches of powdered 
frelh Cynder of Newcafile Coal did in feven 
days abforb 5 cubick inches of elaftick air* 
And 1 3 cubick inches of air were in 5 days 
abforbed by Tulvis Urens, a powder which 
immediately kindles into a live Cole, up- 
on being expofed to the open air. 
Experiment CII. 
What effed burning and flaming bodies, 
and the refpiration of Animals have on the 
air, we fhall fee in the following Expert 
ments, viz. 
I fix'd upon the pedeftal under the in- 
verted glafs zzaa, (Fig. 35.) a piece of 
Brown Taper, which had been dipped in a 
folution of Nitre , and then well dried 5 I 
fet fire to the Paper by means of a burn- 
ing glafs : The Nitre detonized and burnt 
briskly for fome time, till the glafs z z a a 
was very full of thick fumes, which extin - 
guifhed it. The expanfion caufed by the 
burning Nitre , was equal to more than two 
quarts : When all was cool, there was near 
Q 3 §0 cu- 
