f 219 j 
SEC TI ORVit, 
Experiments foewing that plants have 
a remarkable power to correct bad 
air in the day. 
56. A fprig of pepper-mint pute» 
tity a 
in a jar full of air fouled by breath-!! he — 
ing (fo as to extinguifh a candle), 
ne eSeped to the fun . had corrected 
mnie could burn in it. — Ss 
~ 57. A fprig of a aE was pat 
in a jar full of air fouled by breath- — 
ing fo as to extinguifh a candle ; it 
was placed in a room during the 
whole night; next morning the air 
was found as bad as before. The 
jar was put at nine in the morning 
in the fun-ihine; in the {Pas of 
: two 
