Book ML. y of Trunks. 119 
CNA TS IV 
Of the PITH. 
È HE Third General: Part of a Branch is the Pith. 
Which though it have a different name from the Pa- 
renchyma in the Barque, and the Infertions in the 
Wood 5, yer; as to,its Subflance, itis the very fame 
P withthem both, Whereof there is a double. evi- 
dence; fe. their Continuity, and the famenefS of their 
z Texture. Their Texture (ball be. fhewed prefently. 
As to their Continuity, it istobe noted, That as the shiz is continu- 
ous with the Parenchyma of the Barque 3 and this Parenchyma likewife, 
with the Infertions in the Wood 5 fo thefe Infertions again, running 
through the Wood, are alfo continuous with the Pith. So that the Ski, 
i Parenchyma, Infertions, and. Pith, are all One entire piece of Works 
na Trda * being only filled up, in divers manners, with the Veféls. : 
s Towhid 2. $. The size of the Pith is various, being not the fame in any 
me of bot two Branches here reprefented. - In Wormwood, Sumach, Fig, Barbery, Tab. 24, 
“tis very large; fe. betwixt 5, and 7 Inches Diametre, as it appears 31,34, 35: 
what I han through the Microfcope. In Pine, Ah; Holly, Walnut, not fo large; 22, 29, 
e Tro Sub from 3 Inches Diameter to.4. In Oak, Apple, Pear, Hazel, lelTer, fcarce 30, 32. 
Pith, a from 2,to 3- In Damafcene, not above an Inch and half. And in El», 23, 25, 
fearce an Inch Diameter. Note alfo, that of all Plants, both Herbs, 26, 33- 
jeChare, The and Shrubs, have generally the largeft Piths, in proportion with the 27- 
d with th other Parts of the fame ‘Branch, as in. Sumach, Fig, Barbery, is ma- 28. 
rts; whid nifeft. 
stare of tht 3. $. Itisalfo worth the noting, That wheras, in molt Plants, 
into Flis the Barque and Wood do both grow thicker every year: the Pith, on 
0 of fever the contrary, groweth more {lender 5 So that in a Branch of one years 
3 sta growth, it is apparently more ample, than in one of two; and in a 
ranch of two, than in one of three ; and fo on. 
Rø ide 4. $. The Pith, for the moft part, if not always, in the Branch, 
2, in as well as the Root, is furnifhed with a certain number of sap-Veféls. 
akon They are here ufually fo poftur'd, as to make a Ring on the Margin 
ió of the Pith, Where they are more numerous, or large, they are more 
Ae ed evident 5 as in Walnut, Fig, Pine, and others. They areallo of di- Tap, 35 
yet Del SiR 
J vers Kinds, an{werable to thole in the Barques as in Wallnut, Lym- 
Der! = pheduöis; in Fig, Ladteals; in Pine, I 29 31, 32. 
5. $. The Parenchyma of the Pith is compofed of Bladders. Which 
are the very fame with thofe in the Barque, and oftentimes in the In- 
Sertions within the Wood. Only thefe in the Pith, are of the largeft 
Size 5 thofe in the Barque, of a lefler 5 and thofe of the Injertions 
de leaft of all : for which reafon they are lef obvious than in the Pith. 
6. $. The Bladders of the Pith, though always comparatively 
Great; yet are of very different Sizes. Being eafily diftinguilhed, even 
as to their Horizontal Área, to Twenty Degrees. Thofe of Fig, Bar- 
berry, and fome others, are fomewhat large. And of many Herbs, as 
of 
Tab. 24; 
