60 $ The Anatomy Book IL 
Motion of the Stalk, alfo Defeends ; and fo, according to the dura- 
bleneß of its Subftance, becomes a fhorter or longer Root 5 the Elder 
or Lower Portion thereof, Rotting off, by the fame Degrees with 
the Generation of the Upper, out of the Stalk. So in Browmwort, the 
Bafis of the stalk finking down by degrees, till it lies under Ground, 
becomes the upper part of the Root; and continuing (till to fink, 
the next year, becomes the lower Part 5 and the next after that, rots 
away; anew Addition being (till yearly made out of ‘the Stalk, as 
Tab. 5. f. 6, the elder Parts yearly rot away. So in Dragon, Crocws, and the like, 
o7. where the Root is double 5 the Bafís of the Stalk, this year 5 the next, 
becomes the Upper-Root 5 after that, the Lower-Root; and at the 
length dies and is confum’d. 
14. $. The Demonftration hereof, is taken, more evidently, from 
2 fome Roots, than from others; as from the Level and Knobed Roots 
qlo 5: F of Wood-forrel, Primrofe, &c. For the Leaves of thole Plants rotting off 
> fucceflively, and the Bafes ofthofe Leaves gradually de(cending into the 
Ground; each Bafs is thus nourifhed with a more copious Sap, and fo 
{welled into fo many thick Kwots. It may likewife be gatherd in 
fome, from the like Pofition of the Vefels or Woody Parts, in the Root, 
yh asin the Trunkı; as in Bares-foot, As alfo, fromthe Root of the Iris 
Tab. 5. f. 4 Tuberofa: where, although the Leaves fall off clofe to the Surface of 
the Stalk; yet after thatis funk down, and fwell’d into a Root, the 
Seats of the perifhed Leaves, and the Ends of the Veffels belonging to 
them, are not obfcurely vilible; whereby the Root is wrought, as it 
were, with feveral Seames and Prickt-Lines; the Seams fhewing the 
fetting on of the Leaves 5 and the Pricks, the Terminations or broken 
Ends of the Vefels: which ends, are ftill more apparent, upon the 
ftripping off the Barque. Iconfidered likewife, That as among Anè- 
mals, there are many, which are not Bred of Eggs, immediately; but 
are Transformed, one Avimal into another : So, it is more than pro- 
bable, That among Plants, there are not a few Inftances of the like 
Transformations 5 whereof, thisis one. 
15. $. The Canfe of this Defcent, fo far as it is dependent on the 
Inward Conformation of the Rost, I fhall thew in the following 
Part. But the Immediate Vifible one, are the Strizg-Roots, which 
this kind of Trunks frequently put forth: which, defcending them- 
{elves dire@lly into the Ground, like fo many Ropes, Iug the Trunk af- 
ter them. Hence the Tuberons-Roots of Iris upon the rotting or fading 
away of the String-Roots hanging atthem, fometimes a little Re-afcend. 
Hence alfo the Shape of fome Roots isInverted: For whereas molt are 
parted downwards, into feveral Legs; fome are parted upwards into 
Tabs §.f, divers Necks, as Dandelyon, and others. Forthele Roots fending forth 
9" ae the top feveral Trunk: Buds, the faid Buds fucceffively put forth new, 
and caft their old Leaves; and continually alfo making their Defeent, 
are at length formed into fo many Necks, of three, four, five, ormore 
Inches Jong, under Ground, 
16. $. HENCE ALfo we underftand, in what particular way, 
fome Roots become Perennial. Some are wholly fo, as thofe of Trees, 
Shrubs, and divers other woody Plants. Others, in part, or by a 
new Progenies of Roots, from the old Head or Body, in the room o! 
thofe that die yearly, or after a certain Time 3 as of Lilinw bulbos 
