: 
; 
| 
fF .203 3] : 
fhine in a fair warm day, from 
eleven till five 0’ clock, when they 
had yielded about one ounce-mea- 
fure.of good dephlogifticated air. 
SEQ TION V. 
Experiments tending to invefligate 
the quality of air yielded by plants 
in the night, and by day in dark 
or fhaded places. 
36. TWO handfuls of grafs, the 
roots being cut off, were put in an 
inverted jar of a gallon, full of 
pump-water, and placed in a room 
during the night, the jar being 
covered fo that no light could come 
at it before I examined it. In the 
: morning 
