r-s95 6] 
amined the air on Monday between 
one and two o’clock, when it ap= 
peared, by the nitrous teft, about as 
good as common air; and yet it 
had not loft its explofive quality. 
After this, I replaced the jar as be= 
fore, in the garden, and put the 
fame dir again to the teft between 
four and: five in the afternoon of 
the fame day, when it appeared to 
be better than common air, without 
having lott its explofive force. 
There 1 now nothing more 
to be done, than to try the effect of 
this air upon a living animal. I 
placed a lively chicken; three weeks 
old, in a jar: filled with this air: it 
grew fick directly, and was in fix 
minutes near dying, when I took it 
out quite motionlefs. It remained 
in the open air during feveral mi- 
hutes in a dying condition, after 
which it gradually recovered. 
I was 
