{ 103 J 
folved to repeat the experiment a- 
gain, with all poffible attention; I 
had ftill half a pint left of the in- 
flammable air, which had been du- 
xing fix days upon the per/icaria urens 
without being much mended. See 
exp. 112, I put a freth plant of 
muttard in a jar filled with water, and 
let up this inflammable air in the jar, 
_fo that the plant was in contact with 
the air. I placed it in the garden 
on a Saturday at twelve o’clock. I 
tried this air the next day between 
one and two in the afternoon, and 
found it by the nitrous teft fo much 
mended, that it appeared better than 
common air, and yet it exploded 
with a loud report by the approach 
of acandle. I replaced the jar again 
in the garden, and put the fame air 
again to the nitrous teft on the Mon- 
day following, when it appeared to 
‘ H 4 be 
