C-0O-N-T £wNT SS... ee 
Se&t. VII. Experiments foewing that plants have 
a fs testis power to correé bad air in vod 
at9 
1X. Eoin: Jhewing that acrid, finking Sy 
‘and poifonous plants yield by day-time as good 
dephiogijticated air as any others, 222 
X. Experiments shewing that all flowers in ge~ 
_ nerai yield a very poifonous air, though in @ 
very fmall quaniity, and are apt to fpoil @ 
great quantity of good air by day and by night, 
XI. nae iments Jhewing that roots of plants 
when kept out of the ground, yield, in ge- 
neral, bad air, and fpoil common air at all 
‘ times, Jome few excepted, 228 
XI. Experiments fhewing that all fruits in Pa 
neral yield bad air, and infect common air af 
all times, but principally in a dark place and 
‘in the night, (230 
aah: improve say air, or yield dephlo-~ 
chi air, but the leaves and the green 
238 
xiv. Eessciiadie Jeewing what kind of water 
obftruéts leaft the natural operation of a 
es dephlog:fticated air, 
XV. Experiments foewing to ‘what degree oj oe 
= | dap Nesifiteated air may be —— by 
xvi _Expine ing the Geet of plants 
“upon inflammable 
‘ch 
