VEGETABLE STRUCTURE. 
77 
that we can wifh more, is to fee the flrudiure of the inner furface of the 
innermofl coat of this Rind in Plants, becaufe that comes next the Blea ; 
and Realcn fays it diould have the fame connedtion with it that there is 
between the outer and the inner Rind. 
This Coat may be obtained feparate j but it requires great care, and a 
nice hand to get it. We find it compofed, as the others, of a feries of 
Vefiels between two Membranes ; but the Vefiels are larger than in the 
reft; and the fpungy matter here is very little. On the outer furface of 
thefe Vefiels there are only receiving, that is only the deprelTed mouths j 
and on the furface next the Blea, there are only the prominent oval Glands, 
which feem made for the difcharge of the abundant fluid. It feems, there- 
fore, that while the wafte part of the Juices of this inner Rind gently 
afcend to the top of the Plant, there is a part of them elaborated by vari- 
ous changes, and at lafi: delivered to the Vefiels of the innermofi: Couch, 
which give it to the Blea. 
CHAP. XVIIL 
Of the Course of the Blea. 
'^HE Blea of Plants, which is the third fubfiance in our trnnfverfe fec- 
tions, is feen great in quantity, and feems compofed of very large 
Velfels : this appearance however is deceiving. What feem Vefiels, are but 
the inter Alices between Velfels ; the vafcular part being very minute in this, 
and all the vegetable frame. 
If we trace the Blea, as we have done the outer Coats, we fiiall fee it 
covering the” entire Plant, immediately under the inner Rind : and its origin 
being placed in the body of the Root, we find it defcending the length of 
the Fibres, and rounding all their ends, afcending to the body of the Root 
again, and thence running up the Flowering Stalk, and Leaf Stalks, lofing 
itfelf in the Leaf Stalks, at that part where the extreme Fibres of the 
Leaves themfelves end ; and terminating abfolutely in the Flowering Stalks 
in the three inner Petals of the Flower. This courfe of the Blea is re- 
prefented in Plate IV. Fig. 50. in a Plant of Hellebore made up of feveral 
pieces, divefiied of the two Rinds, and with the Blea, which is 'there its 
outer covering, laid back from the parts within. 
From 
