
Book IL. af Rods, 89. 

Veffels, although. they are joyned to the Aerial by the Parenchymous 
Fibres, (a) yet.are not continuous with them 5 neither fall under (2) Patas. 
the like Aftraive Power of the Aer, as the Aerial do; the Aerial §. 12, 
therefore, upon their fpreading, do not always carry all the Swcczfe- 
vous along with them 5 but often, ifnot always, leave many of them 
behind them {prinkled up and. downthe Pith; as in Parfley, Carrot, 
Ferufalen Artichoke, Turnep, &c..may be feen. Lag 
40: §.. The fpreading of the Aer-Veffels {till continued, feveral 
of them, at length, break forth beyond the circumference of the 
Root; and fo are diftributed, either in the lower parts, into Branches 
and Strings 5 or at the top; into Leaves. And left they fhould all 
fpread themfelves into Leaves, and none be left for the Canlis; as 
where they are very {mall, or the Sap-Vefels to bound them, are but 
few, they might; therefore diverts of them are, oftentimes, more fre- 
quently braced in the Centres for which reafon, they cannot fo eafily 
{eparate and {pread themfelves from thence, but run more inwardly up ae 
into the Caulis, as in Borage. 
41. §. FROM THE various Sizes, Proportions, and Difpofitions How the 
of the Parts, Roots are varioully fixed, (haped, moved and aged. Thofe whole Rove 
which, by their Annual Growth, are large 5, have fewer, both, Aerial, is differently 
and Szp-Veféls, and, a more copious Parenchyza. So _that the Aer- ete eG 
Veffels, ox rather, the Aery Ferment, contained in them, volatilizing aRsee 
only a finaller portion of the Szps the faid Sap is lefs capable of ad- 
vancement into the I+u#ks and fo. muft needs remain and fix moe co- 
pioufly in the Root, which is thereby more augmented, And where 
the Sap-Veffels alone, are but few, the Rovt is yet, ratably, fome 
what large: but where they are numerous, it is never fo, as to its 
Annual Growth; in any proportion to their Number: Becaufe their 
Tindture, which is Alkaline, will go farther in jetting the Parenchy- 
mons Parts: than the Tindure of Thefe, which is Acidulate, will go, ; 
in fetting Them. (b) j (b) P. 2: 
42. §. When the Aer-Veffls are more pliable and fequent to the §. 31. 
Attra@tion of the Aer, and fo fpread themfelves, and the Succiferous 
together with them, more abroad 5 in the manner as hath been faid 5 
the Root alfo will grow more in Breadth; the nutrition of the Paren- : 
chymous Parts, to which the Vefféls are adjacent, being thus, by the Tab. 2, & 73 
fame dimenfion,more augmented 5 as in Turnep, ferufalen Artichoke, &c. Tab, 7, & 8. 
But where thefe are not {pread abroad, the Root 1s but flender; as in 
Afparagus, Dundelion, &c. ; 
43. §. If the Aer-Veffels be contracted into, or near the Centre, 
and are (omewhat Large or Numerous; and the Succiferous, a\{o more 
copioufly mixed with, or furrounding them 5 the Root grows very 
Long 3 as do thofe of Fenzl, Vine, Liquirifh, &c. For the Aer-Feffels ue 
containing a more copious Ferment, it will well digeft and mature the “47> 17+ 
Sap: Yet the Succiferous being over proportioned to them; the Sap 
will not therefore, be fo far volatilized, as to afcend chiefly into the 
Trunk; but only to fabferve a fuller Growth of their Vefels - which 
being more numerous, and {o more {turdy, and lefs fequent to the 
expanfive motion of the Aerial, this their own Growth; and confe- 
quently, that of all the other Parts, cannot be fo much in Breadth, 
as Length. 
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