Book Il. of Roots, 63 
termiffion of the preflüre; the faid Vefels then dilating themfelves by 
aMotion of Reflitution, and fo fucking up the sap again. 
7. $. Hereunto may be added the Teltimony of fight; the very 
Vefels themfelves, in many Roots, coming under an apparent view, and 
ftanding in the utmoft furface of the Root all round about, as in that 
of Liquirilh, Columbine, Scorzonera, and others. Which Experi- 
ments, I have here, once for all, more particularly fet down ; becaufe 
I fhall have occafion, hereafter, to refer to them. 
CHAP. IL 
Of the BARQUE. 
rate EXT WITHIN the Sk lieth the Barque, 
etines “Tis fometimes Yellow, asin Dock; Red, in Biffort 2 
Roots but ufually, and in seed-Roots, I think, always 
Skin, White. It is derived from the Seed it felf; being 
bulky \ but the extenfion or prolongation of the Parenchy- 
ated 5 >) ma of the Radicle; One of the three Organical 
asa 
Eick Parts of the Seed, defcribed in the First Chap- 
s ofa ter of the Fir Book. 
2. $ It is varioufly Sized 5 fometimes very Thin, as in Jerufalem 
Artichoke, Goats-beard, and in molt Trees; whereit alfo retains the 
ichiy, Name ofa Barque or Rind. Sometimes 'tis more Thick, and maketh up 
olary, the far greateftprotion ofthe Root, as in the String-Roots of Afparagus, 
+ yet in Dandelion, and others. The thinneft and the thickeft are all ana- 
| do it logous, and obtain the fame general Ufes. The degrees of its Size, 
y, the amongft all Roots, may be well reckoned about Twenty, and feen in 
latter, the following examples, fe. Beet, Dropwort, Jerufalem Artichoke , Tab.7, 8, 9. 
of the Orpine, Valerian, Goats-beard, Netile, Brownwort, Columbine, Celan- 
byas, dine, Afparagus, Horfe-Radifb, Peony, Bryony, Eryngo, Borage, Lovage, 
Dandelion, Parfaep, Carrot, &e. In the Root of Beet, fcarce exceeding 
fome a good thick Skiz: but in a Carrot, half the Semidiameter of the Root, 
ce of or above half an Inch over in fome places : and that of. Dandelion, fome- 
king; times, in proportion with the woody Part, twice as thick: the reft of 
efid Several intermediate Degrees:, And to moft Roots, this is common, 
snnot To have their Barque proportionably thicker, at the bottome than at 
“ole the top. 
3. §. ITIS Compounded of two Bodies. The one Parenchymons 5 
Continuous throughout; yet fomewhat Pliable without a folution of 
its Continuity. Exceeding Porous; as appeareth from its fo much 
fhrinking up, in drying. ‘The Pores hereof are extended much alike 
both by the length and bredth of the Root 3 therefore it (hrinketh up, 
by both thofe Dimenfions, more equally. Andthey are very Dilative; 
as is alfo manifelt from its reftorablenefs to its former bulk again, upon 
its 
