7 + 
VEGETABLE STRUCTURE. 
cVifferent from what part of the Plant vve take a piece of this Rind for 
txamination, for there is not variation in the diTpofition of the Veffels in 
t!ie body of the Root and other parts, which we fee in tlie outer Bark ; it 
will be bed therefore to take the piece for examination from the Flowering 
Stalk jud above the ground, that being the part eafied compared with 
others. 
A Small piece of the inner Bark of the Fleliebore thus feparated, and 
cleared perfectly in water with a camel’s hair pencil, appears compofed of 
many couches, beds, or flakes of an uniform matter, laid evenly upon one 
another. This is the fird and mod obvious didinction between the inner 
l\ind and the outer Bark; the lad being one Ample flake, compofed only 
of two Membranes with a reticulation of Vcflels between them. Thefe 
numerous couches give the thicknefs of the inner Rind ; for each couch or- 
bed is not thicker in this than in the outer Rind. 
Thi- flrd care mud be to feparate one Angle couch of thefe from the 
red ; they are ail alike in drudlure, but when they lie one over another, 
the objcdl is confufed. A fmall piece of a Angle couch of this Rind ap- 
pears before the Double Microfeope perfeddly tranfparent, and almod co- 
lourlcfs. The Veflels dand at confiderable didances, afeending in waved 
lines, and inofculaflng often one with another. There are a great number of 
bars joining thefe Veflels one to another ; and thefe are not arched or tranf- 
verfe, as in the outer Bark, but always oblique : fuch a piece, as it ap- 
pears to the Double Microfeope with a very confiderable power, is repre- 
fented Plate IV. Fig. 43. 
Ev working upon a fmall piece in water with Ane camel’s hair pencils, 
we can feparate the Membranes from the Veflels in this as in the other 
Bark ; and a larger power of magnifying being applied, a piece thus pre- 
pa: ed, lliews that each couch or plate of this Rind conAds of two Mtrn- 
inanes, with a feries of Veflels between them ; as the compleat outer Bar : 
but thefe large powers of magnifying drew us alfo fomething more, for 
between thofe Veflels there is a fpungy fubdance, Ailing up every where 
the fpaces ; tho’ unlefs by a very careful eye, fcarce to be diflinguifhed from 
the Membranes themdlves. A piece thus magnifled, is Agured .at 44 : 
and tlie three didindt parts of which it is compo'ed, at the three follow- 
ing numbers ; 45 reprelents a piece of one of the Veflels feparated, and 
vet more powerfully magnifled; 46, the Membrane ; and 47, a fragment 
of the fpungy fubdance. 
With this great power of magnifying we fee the condrudlion of the 
Veflels very plainly. Each is a Ample hollow tube, fludded on all fldes, 
as 
