VEGETABLE STRUCTURE. 
115 
This growth of the Seed when put Into the ground, may juJfHy be called 
the fecond ; for the firfl: was abfolutely taken while the Seed was nouriflied 
from the Plant. We have traced the growth of thefe folded Plates into 
abfolute Seed-Leaves, raifed upon Foot- Stalks, and with their juft green 
colour. Fig. 43. In this ftate of the Plant, from the point to the ex- 
tremity of the Root in the earth, is one fimple uniform body ; and this 
is, properly fpeaking, all of it the Root of the Radifh. A tranfverfe fee- 
tion of this (hews all thefeven condituent parts : we diftinguifli eafily a red 
outer Bark, a whitifli inner Rind, a large white Blea, a pale Vafcular Se- 
ries, a green Flefli, fix Conic Clufters of Vefiels, of a deep green, and 
a white Pith. The Blea bears a great proportion, and the Pith is but in 
moderate quantity. See Fig. 44. 
We fee the Root is perfectly formed : indeed, in the Courfeof Nature, 
It could not be otherwife, for all this part, from * to the extremity down- 
wards. 43, is no more than the original annular Embryo, 34 ; which has 
extended itfelf in length, and in fome degree alfo in thicknefs ; but with- 
out any violence to its own conftrueftion. We fee the progrefs of this 
growth fuperficially in the enlargement of the little Cone cr embryo Root j 
35, 36, 40, 41, 42, 43. But to underfiand it perfedly, the Cone or an- 
nular Embryo muft be iplit lengthwife down the center, in all thofe ftates ; 
and viewed with fome afliftance of the Microfeope. In this method we 
find the Cone a by 36, a very fmall advance from ~ a.. The Cone cr 
growing Root of the Embryo 36, is reprefented thus fplit and magnified at 
Fig. 45. And we thus fee the beginning of the increafe of the Coats, 
that of the Blea growing fafieft : there is in this a fmall Pith. If we cut 
the fame Cone tranfverlely, we fee fix dots, which, indeed, are vilible, 
with fufficient magnifiers, originally in the Embryo itfelf, before its growtii 
begins ; and are the fedions of the fix conic Clufters of Vcfills. 
If we again dift'ed the Root at the grouth 41, we fee no other change 
than a gradual increafe. This Root, which is now the efiTmtial part of the 
Plant, has grown in a degree much greater than the Leaves, and tlte Bud 
fcarce at all : we ftill fee the odginal Embryo encreaftd in length, and 
covered with more difting'-ifliable Coats, but nothing elfe : counting from 
the point to the extremity, the whole is ftill an annular body, vaftlv 
lengthened, for the Coats all return upon themfelves at the lower end otV 
the Root ; and the original fubftance or Flefli c f the Root, returns alf T 
upon itfelf, at the upper extremity or point t.ho’ it fends up a oonion 
from its furface to the yet dormant Bud. See Ehg 46. 
(.L 2 N / X T 
