PHYSICAL anp LITERARY. 263 
not ignorant, that the afhes of peats are 
ufed for that purpofe with great advan- 
tage, not only by themfelves, but likeways 
mixed with other dung, and even the duft 
of peat that remains‘at the bottom of 
_ peat-ftacks; but in that ftate it has not 
the effects of dung, nor are its effects e- 
qual to what they would be, were it right~ 
ly prepared. To fet this matter in a pro- 
per light, I muft be allowed to fay fome- 
thing in general of vegetation, and of the 
ufe of dungs in promoting it, 
VEGETABLES which increafe by feed, 
as is the cafe with by far the greateft part, 
if not all of them, are at firft plantulas 
“‘wrapt up in a very {mall bulk in the end 
of the feed; which, when put in the 
ground, by the moifture they find there, 
extend themfelves, and are firft nourith- 
éd by part of the feed itfelf, which does 
the fame office to the young plant, by af- 
_ fording it a finer nourifhment, as the pla- 
| eenta does to the embryo. When the plant 
& becomes ftronger and. fhoots forth its 
y Boots, it then draws its nourifhment from 
the 
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