{ 247 7) 
SECTION. Xy, 
Experiments foewing to what degree 
of purity dephlogifiicated air may 
be elaborated by vegetables. 
IT has appeared in the courfe 
of feveral hundred experiments 
which I made in my retirement, 
ee 1g Ae of Plants in genstal 
not. ; ao orcad foster: eS aa 
the moit part of them receive the 
direct influence of the fun prin- 
cipally in the afternoon between 
mid-day and fix o’ clock: in the 
middle of the fummer, 
gg. | obtained from feveral = eS 
fuch a pure dephlogifticated air, 
that the flame of a wax-taper not 
R a4 only 
