
































































of Roots. = Book II 

Tab. 10, 
& fequent. 
Tab, 13, 14, 
Tab. 14. 
Tab. 85 9. 
Tab. 9. 
Tab, 8, 
its infufion in Water: that isto fay, Jt isa moft curious and exquilitely 
fine wrought Sponge. Thus much the Eye and Reafon may difcover. 
4. §. The Microfcope. confirms the truth hereof, and more precifely 
fhews; That thefe Poresare all, in a manner, Spherical, in moft Plants 
and this Part, an Infinite Mafs of little Cel/s or Bladders. The fides of 
none of them, are Vilibly pervious from one into another 5 but each is 
bounded within it felf. So that the Parexchyma of the Barque, is much 
the fame thing, asto its Conformation, which the Froth of Beer or 
Eggs is, asa fluid, or a piece of fine Mazchet, as a fixed Body. The 
Sides alfo of thefe Bladders are as tranfparent, as thofe of Water ; or 
the Bodies of fome Infécts. 
6. g. But their Size is ufually much fmaller; and their Pofturemore 
Regular than thofe in Bread or Water. In all Roots they are fo fmall, 
asfearcely, without the Microfcope, to be difcerned: yet are they of 
different Size, both in the fame, and in divers Roots 5 the varieties 
whereof, amongft all Roots, may be reduced to about Ten or Twelve 
according to the Standard, in Tab. 11. Some of thofein Dazdelion, 
being of the Smalleft 5 and in Buglofs,of the Greateft. They are pofi- 
ted, for the moft part, at an Equal Height ; and piled evenly one over 
another: So that, oftentimes, they vifibly run in Ranks or trains, 
both by the length and breadth of the Roots,as in the Root of Buglofs,or 
of Dandelion, {plit through the middle, may be feen. Although they are 
ufually Spherical, yet fometimes, and in fome places, they are more 
oblonge, as inthe outward part of the Barque of Buglo/s. Thefe Bladders, 
ate fometimes beft feen, after the Root, being cut traverfe, hath layn 
by a while, to dry. 
6. §. They are the Receptacles of Liquor; which is ever Lucid 5 
and I think, always more Thin or Watery. They are, in all Seed- 
Roots, filled herewith; and ufually, in thofe alfo which are well 
grown, asof Borage, Radifh, &c. 
7. §. THIS Parenchywous Part, inmany Roots, is of one Uniform 
Contexture 5 asin Afparagus, Horf-Radifh, Peony, Potato, and others. 
In many others, it is, as it were, of a Diverfified Woof’, the Bladders 
being, though every where Regular, yet either in Shape, Size, or 
Situation, differentinfome Parts hereof, from what they are, in other 
intermediate ones. For thefe Parts, are like fo many White Rays, 
ftreaming, by the Diameter ofthe Root, from the inward Edge toward 
the Circumference of the Bargue 5 asin Lovage, Melilot, Parfnep, &c. 
cut tranfverlly, is apparent. They are, though not in direct Lines, 
continued alfo by the length of the Root; fo that they are, as it were, 
fo many Membrances,by which the other Parts of the Barque,are difter- 
minated. 
8. §. The Continuation of thefe Diametral Rays, or Portions, is 
divers: fometimes, but half through the Bargue, or fomewhat more, 
or lef, as in Melilot. And it is probable, that to the Roots of all or 
mot Trefoyls, and alfo of the Leguminous Kind, this is proper, To have 
their Diametral Rays come fhort of the Circumference, Sometimes, 
they run quite through to the very Shiv, asin Lovage. And I think, 
in the Roots of all Umbelliferous Plavts : In which therefore, the Sk 
feems to have a clofer Communion with the Diametral Rays, and to be 
originated efpecially therefrom. They ufually ftand at an Equal Di- 
ftance in the fame Root: But with refpeét to divers Roots, their Di- 
{tance 

