renard, after the frf Year. 39$ 
msan important infin aL ifo thofe who Si 
ands oo 
~The. tiui tide: on fruit-trees, by ubl their 
‘branches into green-houfes while the roots remain in the 
"ground, need not be repeated. They are better known than 
underftood ; and can only be accounted for iby fuppofing that 
their nourifhment i is derived from the air. Of this the follows 
. ing experiment may be a proof. - | 
A branch of the maple.being feparated from the tree, and 
the lower end fealed, placed in any part of the tree, will bloom 
as foon: as any of the adjoining branches not feparated from the 
tree will do. ‘The buds of trees, deriving their noutifhment 
from the air, fend dowa their fibres between the bark of the 
tree and the former year's growth of wood, and lay an addition? 
al wood over the former growth. It is upon. this. principle 
alone, that. the „growth of inoculations. can be accounted. for ; 
and it is clear and plain, that every bud has its own pith, per- 
feclly diftin& from the tree it is attached to, and, has alío in it» 
felf every other part of a tree. 
‘From .a.due confideration of what has been AR it twill ap- 
peat, that the growth of annual. plants is the expanding of: the 
arts contained within their feeds as bulbs, and a. production of 
other feeds and bulbs, perfectly diftin@. and unconnected with 
the former ; but that the growth of trees after the firft year is 
the expanding of buds, adhering to the former growth, and the 
fitting of other buds for future growth attached to the tree, as 
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