Lee: 7 
the-leaves~ inereafe - fafter, becaufe 
they are pufhed out of the,leaves by. 
a vital motion inthe leaf.-_Itis alfo 
true}. thatileaves thus placed m wa- 
ter impregnated with fixed- air,..do 
not yield that fine dephlogitticated 
air Which they yield. when-placed 
in common pump-water; ~~ which © 
may be owirg: perhaps to’ the. great 
abuhdance of fixed air penetrating 
the leavess by being abforbed, ‘and 
oozing out-asit were, In a kind -of 
tumultuary way, together with the 
air already contained in the leaves. 
Thus the air iffuing out of the 
leaves may not have undergone 
that degree of elaboration required 
to change it into dephlogifticated 
air: for the leaft circumitances 
difturb nature in this _ : ; 
» fhade of a buildings 
i i. v4 
