VEGETABLE STRUCTURE. 
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plainly that it is no other than the particle of the original Flefh, 34, fome- 
what larger, and with a beginning of growth j the part 34, is the fame 
with 36, a j and 34, the fame with 36, b. And the whole being fplit, 
and viewed in a thin dice by the Microfeope, dill flicws itfelf to be the 
fame original elliptic ring of Flefla which was produced in the globule of 
Farina, 37. All the difference here is, that this Embryo is clothed with 
feveral Coats, not naked, as it was produced there ; and that at the end, b, 
which is to give rife to the afeending Stalk, it has fliot out two broad 
plates, and a fmall convoluted head between them. Thefe two plates are 
to be the Seed-Leaves of the future Plant, the convoluted head is the firft 
rudiment of a Stalk, and the end, a, is to extend itfelf into a R oot. 
This Embryo is what has been called the Plan.ula Seminalis j and 
people have fancied they faw in it the entire future Plant ; not knowing 
that the Flowers, and other parts, were to be abfolutely produced in the 
fucceeding Plant by the plain courfe of growth ; but conceiving they were 
all here, and only to be unfolded. If we proceed to cut the Embryo 
taken from a perfeft Seed tranfverfely, we may with powerful glaffes lee 
in it every one of the feven conflituent fublfances of the fucceeding Plant. 
They are far from diftindl : an eye not before informed what were the con- 
ftituent parts of a Plant, would have little chance to difeover them ; but 
being known in the Vegetable Philofophy, they will be all found in their 
places here. 
The entire Seed of the Radilh is of a figure approaching to oval, but 
irregular ; the Skin is brown, and there is a black fear at the place where 
it originally grew to the column in the Pod. Againft this part of the Seed 
is placed the part a of the Embryo, 34 and 36; and at the oppofite 
end the part b, where the Embryo fpreads into the two Plates and inter- 
mediate Crown. 
The Seed being put into the ground, receives moifture, and its inner 
fubftance fwells. The original Juices in the Embryo, a b, 36, are di- 
luted by the fluid received from the earth, and the continual changes of 
the temperature of the air, in refpedt of heat, put all in motion j for 
every thing fwells with heat and flirinks with cold j and there is no mi- 
nute in the day wherein there is not fome fmall change in the degree of 
heat about us. Little changes affed; little bodies ; and confequently thefe 
affed the moiflened Embryo in the Seed. The Juices being made thin 
enough to flow, are forced along the Veffels by this alternate contradion 
and dilatation of the body itfelf; and new nourifhment being fupplied, the 
Veffels become extended, and increafe. 
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