VEGETABLE STRUCTURE. 
125 
two Rinds, above them. This is the origin of a Radical Leaf, differing 
fcarce at all from that of a Radical Fibre, as has been fhewn in the Fibres 
of the Hellebore. Within thefe portions of the Flefh are produced conic 
clufters of Veffels, which after a time are diverted of that covering, and 
run free, jurt as in the Seed-Leaves, to the extream parts of the Leaf. 
To know the true origination of thefe, we murt go back to the young 
Plant, and its Conic Clufters. A fedtion of this below the point fhew- 
ed thefe to be fix : as this part, which is the Root, continues to grow, it 
increafes vartly in thicknefs; and each of thefe clufters feparates, firft into 
two; in which ftate they are twelve: thus we find them in a half-grown 
Radifh. After this each divides again into two, and the Clufters are then 
twenty-four : fuch as we find them in a full-grown Radifh-Root. The 
whole Clufters are fwelled in length ; and their white Veffels clofely fur- 
round the green, and are immerfed in the Flefti of the Root, which is 
alfo white, and which runs in a kind of rays, intermixed with the Blea, 
in the manner before mentioned in the Hellebore Flowering-Stalk ; but 
more diftindtly. 
Thus the Root continues to the point ■*', where there is, in this ftate, 
the fhort rudiment of a Stalk fupporting a Bud. In a tranfverfe fedtion of 
this rudiment of a Stalk we fee the parts much more diftindtly. The 
Flefh lofes its white colour and radiated form, which joined to difguife it 
in the Root, and to confound the view : here it appears of an opake pale 
colour, forming a regular line within the Blea ; and within it, as is the ufual 
courfe of Nature, are the conic clufters of Veffels, pointing inward into 
the large Pith. 
These are here divided into a much larger number than in the body of 
the Root; they may be accounted thirty-fix ; but they are fo eafily capable 
of farther divifion, that it is impoffible to afcertain any regular number. 
The coloured Veffels of thefe clufters are of a deep green ; and the white 
Veffels which belong to the fame clufters, lie behind them. Thus is form- 
ed the rudiment of the Radifh Stalk on the head of the Root ; and from 
this place it is in the young Plant, we are to trace the origin of the Leaves, 
whofe effential and original part is a portion of thofe Clufters. 
Three fmall tubes of the Flefh from the furface of that fubftance 
in this rudiment of a Stalk, we have feen pufti themfelves obliquely out- 
ward. The Membranes and the Blea go with them; and Veffels from the 
Conic Clufters of that part whence the procefs rofe, fend multitudes of 
thofe fmall hollowed Fibres, mentioned in the Hellebore, out with them. 
Thefe pierce the bafe of the three tubes of Flefh, and from thefe rife new 
Conic 
