vo 
= greater ¢ 
ticularly thofe which have-a rot 
SECTION XVIII. 
Leaves of plants die fooner when ibe 
dephlogifiicated air, elaborated by 
them, is feparated from them, 
W HEN the dephlogifticated air, 
fettled in the form of bubbles upon 
the leaves, is fhoak off, new bub- 
hig a ae and thus 2 fhaking. 
cated air is ateined, The fecond 
crop of bubbles contains in general 
a finer kind of air than the firft; 
‘thie reafon of which may be, that it 
is fcarce poffible to free the furface 
‘of the leaves entirely: from all” at- 
moipheric air flicking to them, pa 
a 
~ 
