tcolefeent, 
ny Fion, 
earth will 
Texture of 
Book IH. of Trunks. 
113 
Chanels, not made or bounded by any walls or fides proper to thêm- 
felves, as a Quil thruft into a Cork, and as the Acr-Vefels are in the 
Wood: but only by the Bladders of the Parenchyma; which are fo 
poftured and crouded up together, as to leave certain Cilyndrich Spa- 
ces, which are continued by the length of the Bargue. 
36. $. One difference betwixt the Vefels or Chanels now deferib’d; 
and the Tubulary Holows and other Apertures in the Pith, is this 5 
That thefe never exift originally with the Pith; but are fo many Rup- 
tures fapervening to it in its Growth. Caufed, partly, by the Stretch or 
Tenter it faffers from the Dilatation of the Wood: (a) and partly, the 
drying, and fo the Shrinking up of its Bladders, and of the Fibres 
whereof they are compofed. Whereas the faid Vefels im the Bargue, 
are many of them originally formed therewith. And thofe which are 
poft-nate, not made by any Rupture, but only fuch a Difpofition of 
the Parenchymous Fibres, and Conftipation of the Bladders, as is there- 
unto convenient. 
37. $. In paring the Barque of a Branch of Pine, Sumach, &xc. they 
appear, neither parallel, nor any where Inofculated: but run, with 
fome little obliquities, diftin& one from another, through the length 
of the Branch: and fo, we may believe, through the length of the 
Tree. 
CHAP. mM 
i Of the W 0 0 D. 
HE next general Part ofa Branch, is the Wood 5 
which lyeth betwixt the Barque and the Pith, 
And this likewife evermore confifteth of Two 
General Parts, fc. of a Parenchymous Part, and 
that more properly called Lignous. The Pa- 
ES) renchymous Part of the Wood, though much di- 
N verfifyed, yet in the Trunks of all Trees what- 
SE foever,hath this property, To be difpofed into 
many Rays, or Diametral Infertions, running be- 
twixt fo many Lignous Portions, from the Barque to the Pith: as in 
any of the Quarters here before us may appear. 
2. $. But thefe Infertions are much diverfifyed, according to the 
feveral Sorts of Plants. So in Barberry, Afb, Pine, Worm-wood, they 
are le numerous. In Elm, Walnut, Fig, Sumach, they are more. 
And in Holly, Pear, Plum, Apple, Oak , Hazel, are moft numerous. 
3. §. The fame Infertions, in Barberry, Wormwood, and fome in 
Oak, are very Thick. In Pine, Fig, Afb, of a middle Size. In Pear, 
Holly, and moft of them in Oak, are exceeding Small. Again, in Bar- 
berry, Elm, Afb, sumach, Fig, they are of anEqual size. In Holy, 
Hazel, Pear, Plum, Oak , they are very Unequal: fome of thofe in 
Holly, being Four or Five times thicker than the reft; in Plum, six 
or Seven times; andinOak, Ter times at leaft. 
x A. $. 
(4)B.1.c. 
3. 9222,06 
23 
Tab. 22, 
to 35. 
Ibid. 
