t so 7 
the plants will be earlier revived in 
their office than when the fun is 
hid by thick clouds. 1 found this 
difference to be very remarkable, 
fo that in a dark cloudy morning 1 
found the plants to begin their 
daily operation an hour or two later 
than i in a clearer day. Ieven found 
that.all the plants in the fame gar- 
den did not awake, if I may fo 
exprefs myfelf, at the fame time 
from their nocturnal ftupor, Thofe 
plants, whofe expofure was fuck 
as favoured the rays of the {un 
being caft early upon them, were re- 
Vived earlier than thofe which were 
fhaded by other plants, a wall, 2 
‘ 
houfe, &c. ~ Nay, I even found — 
that there was fome difference im 
this refpect between the leaves of © 
the fame tree; as I found thofe 
which were the firft influenced by — 
: the 
