
Book IL of Rooks. 91 
may be feen. So that thefe Roots, as by the Perpendicular Sirings, 
which fhoot from them into the Earth, and wherein the Aer-Veffels 
are contracted into their Center, they are Plucked down (2): So by Cay ned 
the Aer-Veffls, which ftand nearer the Aer, and more under its At- $.15. 
tractive Power (b) they are invited upwards ; whereby they have (4) P. 2. 
neither a/éent nor decent, but keep level, betwixt both. $. 36. 
49. §. But ifthefe Veféls are ContraGed, ftanding either in, or 
near the Centre, and are invefted with a Barque proportionably 
Thick 5 the Root ftriketh down perpendicularly, as doth that of Dan- 
delion, Buglofs, Parfzep, &c. And therefore the faid Vefels, although 7p, 7,3 
they are {pread abroad in the Jevel Roots, yet in the perpendicular ones 3 
of the fame Plant, they are always contracted 5 as by comparing the 
Level and Down-right Roots of Ammi, Primrofé, Fernfalen Artichoke, 
Com/flip, and others, is manifeft, 
50. §. If the Aer-Veféls are Contracted, and Environed with a 
greater number of Succiferous, the Root gtows deep 5 that is, perpen- ee 
dicular and long.\(c) Perpendicular, from the Contraction of the Aer- ©) P-tet- 
Vefféls; (a) andJong, from the Predominion’of the Succiferous, which Cb "Pa. 6 
in their growth, are extended only by that Dimenfion, as in Liquirifh, 49. ; 
Eryngo, &c. 
51. §. Ifthe Succiferowsare over proportioned to the Parexchymous 
Parts, but under to the Aer-Vefels 5 the Root is perpendicular ftill, but 
groweth jhalow: The Succiférows being fturdy enough to keep it per- 
pendicular 5 But the Aer-Veffels having a predominion to keep it from 
growing deep 5 as in Straxtonium, Nicotian, Beet, &c. Tab. 7 
52. §. If, onthecontrary, the Parexchymous Parts are predomi- 
nant to the Aer Vefels; and that,both in the Root and Trunk ; then the 
whole Root changeth place, or defiexds. (e) For the faid Aer-Veffels, (e) P.t. cit 
having neither inthe Truzck, nor inthe Root, a fafficient Power to §. 10. Lib.t. 
Draw it upwards 5 it therefore gradually yields to the Motion ofits 6.2,$.25,and 
String- Roots; which, as they ftrike intothe Soil, Pluck it down after 4 Append. 
them. And becaufe the old Strings annually rot off, and new ones £1 Bude 
facceflively thoot down into the Growed, it therefore annually {till de- ** 3% 
fcendeth lower 3 as in Tulip, Lily, &c. may be obferved. 
53. §. Where the Aer-Vefls are much fpread abroad, and alfo xu: 
merous, the Root oftentimes, as to its feveral parts, descends and afcends 
both at once. So Radifhes and Turneps, at the fame time,in which their 
nether parts defcend 5 their upper, (where the faid Peels are more 
loofely braced, and fpread more abroad than in the lower parts ) do Tab. 2; 
afcend, or make their Growth upward. Hence alfo, the upper part 
of moft young Roots from Seed, afcends: Becaufe the firft Leaves, be- 
ing proportionably large, and ftanding in a free Aer, the Aer-Veffels 
therein, have a dominion over the young Root; and fo themfelves 
yielding to the elicitation of the Aer, upwards 5 they draw the Root; 
in part, after them. 
54. §. BY THE Situation and Proportions of the Parts; the Age How Roots 
of the Root is alfo varied. For if the Sap-Vefféls have the greatedt are different 
Proportion, the Root, is Perennial, and that to the fartheft extent, as ly Aged. 
in Trees and Shrubs.” Becaufe thefe Vefels containing a more copious 
Oyls Cf) and their feveral Principles being more clofely Concentred, f) Be 4 
they are lefs {abject to a Re/olution, that is, a Corruption or Mortificati- $22. 
6n by the Aer. $2 55.9. 











































