L Bes |) 
But as this dephlogitticated air is 
not produced immediately from the 
pump water, but only when this 
green matter is formed, it is clear, 
that the air obtained from the leaves, 
as foon as they are put in the water, 
is by no means air from the water, 
but air continuing to be produced 
by a fpecial operation carried on ina 
living leaf expofed to the day-light, 
and forming bubbles, becaufe the 
furrounding water prevents this air 
from being diffufed through the at- 
mof{phere. 
_ Itis true, that pump water, ipticeer 
in the fun-fhine, will foon yield 
fome {mall air bubbles, fettling at 
the bottom of the jar, and every 
where at the fides; but this air is 
very far from being the fame as that 
contained in the air bubbles of the 
leaves. 
