Book L of Planes. 
15 
Cuticle, Which tranfient Sap, though it thus becomes fine, yet is not 
fimple ; but a mixture of Particles, both in refpe& of thofe originally 
in the Root, andamongft themfelves, fomewhat heterogeneous. And 
being lodgd in the Cortical Body moderately laxe, and of a Cir- 
cular form ; the effe& will be an eafie Fermentation. The sap fermen» 
ting, a feparation of Parts will follow ; fome whereof will be impa@- 
ed tothe Circumference of the Cortical Body, whence the Cuticle be- 
comes a Skin 5 as we fee in the growing of the Coats of Cheefes, of 
the Skin over divers Liquors, and the like. Whereupon the Sap 
pafling into the Cortical Body, through this, as through a Manica Hip- 
pocratis, is {till more finely filtred. With which Sap, the Cortical 
Body being dilated as faras its Tone, without a folution of Continu- 
ity, will bear; and the fupply of the sap ftill renew’d : the pureft part, 
as moft aptand ready, recedes, with its due Tinéfures, from the faid 
Cortical Body, to all the parts of the Lignons; both thofe mixed with 
the Barque, and thofe lying within it. Which Lignous Body like- 
wile fuper-inducing its own proper Tindfures into the faid Sap 5 “tis 
now to its higheft preparaton wrought up, and becomes (as they fpeak 
of that of an Animal) the Vegetative Ros or Cambium : the nobleft 
part whereof is at laftcoagulated in, and affimilated to the like füb- 
ftance with the faid Lígnons Body. The remainder, though not united 
to it, yet tinéur'd therein, thus retreats, that is, by the continual 
appulfe of the Sap, is in part carried off into the Cortical Body back 
again, the sap whereof it now tinútures into good Aliment. So 
that whereas before, the Cortical Body was only relaxed in its Parts,and 
fo dilated 5 'tisnow increas'd in real quantity or number of parts, and 
fo is truly nouriflY'd. And the Cortical Body being faturate with fo 
much ofthis Vital sap as fervesit (elf; and the fecond Remainders 
difcharged thence to the Skin 5 this alfo is nourifh’d and augmented 
therewith. So that asin an Animal Body there is no inftauration or 
growth of Parts made by the Boud only, but the Nervous Spirit is al- 
fo thereunto affiftants fo is it here: the sap prepared in the Cortical 
Body, is as the Bloud,and that part thereof prepared by the Lignous, is 
as the Nervous Spirit ; which partly becoming Nutriment to it flf, 
and partly being difcharged back into the Cortical Body, and diffufin; 
its Tia&ure through the Sap there, that to the faid Cortical Body abd 
Skin, becomes alfo true Nutriment, and fo they all now grow. 
24. $. In which growth, a proportion in length and breadth is re- 
quifite : which being rated by the benefit of the Plant, both for firm 
ftanding and fufficient Sap, muft therefore principally be in length. 
And becaufe it is thus requifite, therefore by the conftitution of one 
ofits Parts, fè. the Lignous Body, it is alfo made neceflary. For the 
Pores hereof, in that they are all extended by its length, the Sap alfo 
according to the frame and fite of the faid Pores will principally move; 
and that way asits Sap moves, the fame way will the generation of its 
Parts alfo proceed 5 Jeby its length. And the Lignous Body firft (that 
is by a priority caufal) mo in length it {elf ; the Cortical alfo moves 
therewith. For that which is nourifh’d, is extended: but whatever 
is extended, is mov'd : that therefore which’ is nourifh’d, is mov’d : 
The Tignons Body then being firft nourith’d, ‘tis likewife frlt mov'd, 
and fo becomes and carries in it the Principle of all Vegetative motion 
in the Cortical 5 and fo they both move in length, 
25. $ 
