Of Vegetation. 351 
Seed roots, into the radicle c, z, d, which 
radicle, when it has Shot feme length into 
the ground, does then imbibe nourishment 
from thence 3 and after it has acquired Suf- 
ficient ftrength, as this tender dudile root 
is extending from z to c , it muft neceffa- 
rily carry the expanding Seed-lobes upwards* 
at the fame time that the dilating from z, 
to d makes it Shoot downwards 3 and when 
the root is thus far grown, it fupplies the 
Plume b with nourishment, which thereby 
fwelling and extending opens the lobes a r, 
a r, which are at the fame time raifed a- 
bove ground with the Plume; where they 
by expanding and growing thinner turn to 
green leaves, (except the Seeds of thepulfe 
kind) which leaves are of Siich importance 
to the yet tender Plume, that it periflies, or 
will not thrive if they are pulled off 3 which 
v makes it probable, that they do the fame of- 
fice to the Plume that the leaves adjoyning 
to Apples, Quinces and other fruits do to 
them, viz. they draw fap within the reach 
of their attractions fee Exper. 8 and 30* 
But when the Plume is fo far advanced in 
growth, as to have branches and expanded 
leaves to draw up nourishment 5 then thefe 
fupplemental feminal leaves, ar, a r, being of 
no 
