The Anatomy ; Book IL 
Rings, which the precedent year compofed the Cortical Body of the 
Root : but by the Generation of anew Ring, next the Wood, is now 
thruft off and fhrunk up intoa skim. So alfo in the Roots of Buglofs 
and Horfe-Radifb, as far as the Bladders in the former, and the Peffels 
in thelatter are Radiated ; the Cortical Body feems either annually or 
oftener, to fhrink up into another new Ski», as, the old ones fall of. 
And fometimes, perhaps, as in Asfparagus, the whole body of the Per- 
endicular Roots, except the woody Fibre in the Centre, becomes the 
econd Ski». So that the wearing away of the old Skin, fucceeds the 
derivation of the new ones as in Defcending Roots, the Confumpti- 
on of the Lower Parts, doth the Generation of the Upper. Becaufe 
the Barque fwells, and grows fometimes fatter than the Shin can fall 
off, or give way to it : therefore are the Roots of many Herbs, Barque- 
bound, as well asthe Trunks of Trees. 
3. $. This Skin is ufually, if not always, compounded of two 
Kinds of Bodies + which alfo is probable of the Coétaneous. The one, 
Parenchymons, and frequently conftruéted of exceeding little Cells or 
Bladders 3 which in fome Roots, as of Afparagus, cut traverfe, and 
viewed through a Microfcope, are plainly vifible. Thefe Bladders are 
of different Sizes 5 in Buglos, larger 3 in Afparagusleß; and fometimes 
they coincide and difappear. But in thefe, and all other Roots = 
even where thefe Bladders appear not, the Parenchyma of the Skin, 
is of the fame Subftantial Nature, with that other more vivid and bulky 
one of the Bark: As is manifelt, from its being thence Originated 3 
and alike Conformed, as fhall be feen; and not only adjacent to it, as a 
Glove is to the Hand ; but continuous therewith, as the parts ofa 
piece of flefh, are one with another. 
4. $. OF THIS Parenchymous Body, the skin confifteth chiefly, 
but not wholly ; there being many Lignous Vefels which are Tubulary, 
mixed therewith: which, though hardly by the Microcope, yee 
otherwife, is demonftrable. For in tearing the Ski», you fhall do it 
more eafily by the length, than bredth ; becaufe, by the firft way, the 
continuity only of the Parenchyma , is diffolved ; but by the latter, 
both of this, and of the Vefels, thefe being pofited by the length of the 
Root : Sothat, as by the {malneß of the Bladders of the Parenchyma, 
the Skinis Denfe 5 fo by thefe Veffels, is it Tough. 
SS À ifyou cut a Root traverfe, and let it lie by for fome 
time, all the parts,wherethere are no /eféks,{hrink below the furface of 
the cut-end 5 but where-ever Thefe are polited, there is no fhrinking 5 
which oftentimes, evidently appears alfo in the Skin: becaufe the faid 
Veffels, though, as the Bladders, they may coincide; yet they cannot 
vilibly fhorten or fhrink up in length ; no more than a Straw, whofe 
fides may yet be eafily cruthed together, 
6. 9. Further, the Root being cut traverfe, if, near the cut-end, 
you very gently prefs the fide of the Root with the edge of your Nail, 
the sap will thereupon arife fometimes from the Skin 3 in the fame man 
ner, as from any other part of the Root, where the like Vefféls are pofi- 
ted. And although the Sap may likewife be exprefled from the Pith, 
and other Parts where fometimes, there are none of thee Vefels 3 yet 
not without a folution of there continuity 3 which here doth not fol- 
low; as appears, from the difappearing of the Sap, together with th 
termi 
