Y ‘soe Ty 
the jar in the fun-thine from twelve — © 
till. five o’ clock, I found the air 
much corrected, for one meafure © 
of it with one of nitrous. air eccu- 
pied 1.30. The air was. very, €x- 
plofive. 
I was now fatisfied that all sales 
poffefs the power of correcting in= 
flammable air ;, but I wanted to fee 
whether plants could reduce inflam= 
Diable air to phe parity of common 
remain Pinter” two or more 
with the plant. 3 
i1o. A meafure of caflagiinels 
air was let up in a jar containing 
a handful of Perfcaria urens, and 
another meafure in a jar contain- 
ang a handful of leaves of a wal- 
nutttee. _ They ftood 48 hours in 
the open air, when i. a 
a them, tes one 
