i6o VEGETABLE STRUCTURE. 
Nature is wonderfully uniform in her courfe ; and whenever we think 
otherwife, it is becaufe we do not underfland her operations. It was not 
known, till from fome former obfervations 1 was fo happy to make, that 
the Rudiment of the future Plant was in the globule of Farina; and that 
it was only a particle of the Flefliy Subftance of the Stalk : but now that 
is demonftrated, we fee that the little lump, firfh formed for the produc- 
tion of a Bud, is the very fame thing ; and we have the fatisfadtion to find, 
that in each of thefe fates, diflindt and unlike as they feem, the fame 
courfe of time is required to bring them to maturity. When the ripened 
Seed is fou n, the third year fliews the [lower: and in the fame manner 
three years ferve to peifedl this Radical Lump into a F'lovvering Plant. 
If the Seed be kept fafe out of the ground a year or two, it will yet 
grow, when fown ; and if the Bud formed from the Radical Particle be 
at its due growth, feparated from the old Root, it will, in the fame man- 
ner, bear to be kept a long tim.e out of the earth ; and yet will grow when 
planted. Tlte cafe is juf the fame. The Seed and the Root ferve equal- 
ly as coverings for this living Panicle of the Flefhy Subfance ; and fo long 
as they are kept from mouldinefs, fermentation, and decay, that l^article is 
always ready to grow. 
The new-formed Lump on the fide of the Root is in the fate of the 
Rudiment in the Farina; and powerful Microfcopes will difcover in this, as 
in the Seed, a cluf er of Fibres toward the top, which are arranging them- 
feh es for the Formation of the Plant to come. Soon afterwards their form 
becomes more difindtly vifible. 
The new-formed Lump pufies outward, and foon fioots inward a 
Pith, its proper lining. The tirf formed Particle cannot do otherwife j for 
it is a piece of that fubfance of the Root from which the Pith grows. In 
a few weeks this Lump, which was at firf only a yellowifi fpot, becomes 
a lengthened streak; making its way in a direction a little oblique, 
and pointing upwards, toward the outfide of the Root. 
Soon after it forces out the Blea of the Root, its fpungy inner Rind, 
and its outer Bark; and is thruf, together with them, to the level of the 
furface, and prefently after beyond it. It is not there naked ; for the fe- 
veral outer Coats of the Root which it has carried out with it, fend forth, 
from their firfaces, a multitude of filmy fubfances, which encompafs it as 
fcales, forming a proper Bud ; as regular as that upon the mofl: common 
Tree. 
At this period, when the head of the Bud is advanced toward the free 
earth, the crown of it contains that duller of Fibres firfl: feen, fomething 
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