170 
VEGETABLE STRUCTURE. 
the Blea, which is white, and in connderable quantity ; and within that 
the thin, green Valcular Series; then the FkBq’ Subfiance, wliich is. green, 
and nearly equal to the Blea in thicknefs : W.thin this is the hollow of the 
Stalk filled with Pith, furrounded with the Conic Clullers. All ihefe 
parts may be feparated by maceration ; and thus we are to follow them up 
the Plant. 
They appear in this difiindt form all the way up to the Leaf upon the 
Stalk, 0 , wbere the brown and tough exterior Bark Ihoots outward, ex- 
pands, and forms that Leaf. It continues into it, terminates in it, and is 
there entirely lolf. 
At tins joint of the Stalk there Is, as it were, a new (lioot made. The 
Stalk above this Leaf is not a continuation of the Stalk below ; but a 
growth cf a new one : jull as that from the head of the Root. The 
Procefs of Nature is the fame in both ; and one being underflood the other 
is evident. 
As the Stalk rifes to this part where the Leaf is placed, it grows thicker ; 
but it groups alfo hollow, />. The Pith, fuppofed fo effential to the Blant, 
is, in great part, obliterated here ; and there feems an end of the Stalk : 
for tire outer Rind is gone off in the Leaf, and the great Flcfliy Subfiance 
cc'mes to a kind of termination, furrounding the top of the Stalk in this 
part, jufl as it did the Root at the Crown. There are three fubflances 
which furround this flefhy part, the V’'afcular Series, the Elea, and the in- 
ner Rind : thefe do not come to a termination, but continue themfelves 
up into a new Stalk ; jufl as the three Coats, thefe two and the outer Rind, 
did from the Crown of the Root. See Fig. 3, tf. 
The I'lefliy Subllance, tho’ it feems to terminate there, does in reality 
fend up a part of its thicknefs alfo, which lines them, from this flioots 
internally a Pith : and thus is formed a fecond Stalk upon the head of the 
firfl ; which has all its parts, except the outer Rind. It confifls of one 
Pvind, a Blea, a Vafcular Series, a Flefliy Subfiance, the Conic Cluflers, and 
a Pith ; and thus it is continued to the Flower. 
When we fplit this upper Stalk, and trace it thither, we find the Flefhy 
Subfiance runs up in an uninterrupted courfe to the head of the new Stalk ; 
and its Pith forms the head of Seeds. The courfe is very lingular and 
beautiful in this Plant ; and it may be traced eafily. The Flefhy Subfiance 
runs up a little way into the bafe of the head ; for the Filaments rife thence ; 
but as it runs out into thefe, it diminifhes in fubflance till at about one 
third of the height of the head there is nothing of it left : all the refl is 
made 
