Book H. 
of Roots A 
rufalem Artichoke,, Potato, Dog-flones, Monks-hood, little Celan- 
, and others. In which Plants, one or more of their Roots are 
firm, the other fpongy and fuperannuated 5 and partly, by the ravine 
of the Trunk, and other younger Roots, reduced to a Confumption and 
Death, 
17. $. With thefe,Trlips,and other Bulbous-Roots confort : For the fe- 
veral Rindes & shells whereof chiefly,the Bulb confifts,(ucceflively perith 
and fhrink up into fo many thin and dry skizs: betwixt which,and in 
their Centre, other Leaves and Shells, being fucceflively formed, the 
Bulb is thus perpetuated... In the fime manner the Strimg-Roots alfo fac- 
ceed one another annually. So that ât the end of divers Years, although 
it be (till looked upon as the fame Individual Root, yet it is, in truth, 
Another, as to every particle thereof. 
18. $. Laftly, many other Roots are perpetuated by the aforefaid 
Defcent of the Trunk; out of which, it is {till annually Repaired, as 
by the gradual perifhing of its lower parts, it is Diminifhed ; as hath 
been faid. Whencealfo we fee the reafon of the Rugged and Blunt 7,,, 
extremities of thefe, and fome other Roots, as of that Plant füperftiti- 
oufly called Devils-bit : becaufe the end of it feems to be bitten off. 
Yet doth it not appear fo originally 5 but the Lower part thereof rot- 
ting off, as the Upper defcends; ‘the living remainder, becometh 
ftumped, or feemeth Bitten. Thus far of the Original, Shapes, Moti- 
ons, and Ages of Roots. 
CHAP OAL 
Of the SKIN. 
NEXT proceed to the feveral Parts whereof a 
Root is Compounded. The outer Part of all is the 
Skin; which iscommon to all Roots. ’Tis diverfly 
Coloured: Whiter in Skirrets; Yellow, in Docks 
Red, in Potato; Brown, in Lovage; Black, in Bw- 
glofs. Its Surface, fometimes Smooth, as in Hor: 
radifb; Rough, as in Scorzonera, And the Skins 
of the feveral Shells of a Tulip-Root, taken up freth, look as if they 
Were perforated with a great many fmall holes. “Tis of various Size 3 
very Thin, in Parfnep 5 fomewhat Thick, in Buglofs ; very Thickin Is. 
Sometimes it is Opacous, asin Thifile 5 and fometimes Tranfparent, as 
in Madder, 
2. $. Every Root hath fucceflively two kinds of Skins: the one, 
Coétaneous with the other Parts; and hath its original from that 
which involveth the Parts of the Seed it elf The other, Poftnate, 
ficceeding in the room of the former, asthe Root ageth 5 and is ori- 
nated from the Bark. Soin Dazdelyon, the old skin, looked upon 
about the beginning of May, feems to have been one of tho feveral 
Rings 
bt §, fi 2 
