334 °f Vegetation. 
I marked in the fame manner as the Vine* 
at the proper feafons, young Honey fuckle 
flioots, young Afparagus, and young Sun- 
flowers ; and I found in them all a gradual 
fcale of unequal extenfions, thofe parts ex- 
tending moft which were tendered. The 
white part of the Afparagus , which was un- 
der ground, extended very little in length, 
and accordingly we find the fibres of the 
white part very tough and ftringy : But the 
greateft extenfion of the tender green part, 
which was about 4 inches above the ground 
when I marked it, feparated the marks from 
a quarter of an inch, to twelve inches dis- 
tance; the greateft diftcntion of the Sun- 
flower was from \ inch, to four inches dif- 
tance. 
From thefe Experiments, it is evident, 
that the growth of a young bud to a Ihoot 
confifts in the gradual dilatation and exten- 
fion of every part ; the knots of a Ihoot 
being very near each other in the bud, as 
may plainly and diftin£tly be feen in the Hit 
bud of the Vine and Fig-tree; but by this 
gradual diftention of every part, they are ex- 
tended to their full length. And we may 
eafily conceive how the longitudinal capil- 
lary tubes ftill retain their hollownefs, not- 
with- 
