Boke ging as 

CoH. Anse Ve 
Of the Figuration of Trunks. 

becomes a Shrub. : 
2. §. BUT if the faid Aer-Vefels are very large, they will not 
yield fo eafily to fhoot out collaterally 5 and fo the Truzk grows up 
taller and more entire:as in Ozk, Wallaut, Elvz,8c. wherein they are 
exceeding large,is feen.Hence alfo the Vixe,if fupported,willgrow to a 
prodigious length. And Hops and Bryony,are fome of the talleft,amongft 
all Azwual Growths: the Aer-Veffels of all which, are very large. Whereas 
Borage, and many other like Plats, although the Pores of their Paren= 
chyma, are vaftly wide,and filled with Sap 5 yet becaufe their Aer-Veffels 
are fmall, they are therefore but Dwarf:Plants. Wherefore the tall- 
nefs or advancement of a Plant or Tree, dependeth not upon the Plenty 
of Sap, how great foever, but on the Largenefi of the Aer-Veffels. 
3. §. AGAIN, as a Plant or Tree grows either Shrubby, or Tall 
and Evtire, according to the Size of the faid Veeéls: {fo from their 
Pofition, doth it grow Slender or Thick, So, where they keep more 
within the compafs of a Ring, as in E/w, and Afh, the Tree, in pro- 
portion, uftially grows taller, and lefs thick. But where the faid 
Veffels ave fpread more abroad, and efpecially are poftured in Rays,as 
they arein Oak, the Tree grows very thick. Becaufe the faid Veffels thus 
ftanding all along nearer to the Infertions, there is a more ready and 
copious paflage of the Aer out of the one into the other; and fo the 
Diametral growth of the Wood is more promoted. 
4. §. LASTLY, from the fame general caufe it is, Phat the Travks of 
Vegetables are either Round or Angular. Thole of all Trees are 
Round. Becaufe the Barque, being here thicker, and the Aer-Ve/fels 
bound up witha greater quantity of Wood 5 the Aer hath not futtici- 
ent power to move them, and the Barque with them, into thofe various 
Pofitions or Figurations, asthe Trunks of Herbs do yield to. 
5. §. Yetthe caufe of the various fhapes of the Trunk, is not the 
Ae? alories but partly, the Przvciples of the Plaats themfelves, in con- 
juction therewith 5 according to the predominton whereof, and chiefly 
of fome certain kind of Salt or Salts, as 1 fhall hereafter (2) more 1) BAP. 
particularly explicate) the Truk is Square, Triangular, Pentangular, CE) a 
ret 
or otherwife Figured. And thus much in general of the Figuration Cee, 
of Trunks; 
GE Aer: 




































































