Abstract
My dear sir, Every tree in the ordinary course of its growth generates, in each season, those buds which expand in the succeeding spring; and the buds thus generated, contain, in many instances, the whole of the leaves which appear in the following summer. But if these buds be destroyed during the winter or early part of the spring, other buds, in many species of trees, are generated, which in every respect perform the office of those which previously existed, except that they never afford fruit or blossoms. This reproduction of buds has not escaped the notice of naturalists; but it does not appear to have been ascertained by them from which, amongst the various substances of the tree, the buds derive their origin. Du Hamel conceived that reproduced buds sprang from pre-organized germs; but the existence of such germs has not, in any instance, been proved, and it is well known that the roots, and trunk, and branches, of many species of trees will, under proper management, afford buds from every part of their surfaces; and therefore, if this hypothesis be well founded, many millions of such germs must be annually generated in every large tree; not one of which in the ordinary course of nature will come into action: and as nature, amidst all its exuberance, does not abound in useless productions, the opinions of this illustrious physiologist are, in this case, probably erroneous.
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Claims 3
Claim · model-written summary
Trees ordinarily produce seasonal buds that expand the following spring and often contain the next summer's leaves.
Verbatim
e0“Every tree in the ordinary course of its growth generates, in each season, those buds which expand in the succeeding spring; and the buds thus generated, contain, in many instances, the whole of the leaves which appear in the following summer.”
Claim · model-written summary
Destroying buds in winter or early spring induces replacement buds in many tree species that perform the original buds' functions but do not produce fruit or flowers.
- Taxon
- treese0
- Treatment
- buds be destroyed during the winter or early part of the springe0
- Outcome
- never afford fruit or blossomse0
- Comparator
- those which previously existede0
Not reportedDirection
Verbatim
e0“if these buds be destroyed during the winter or early part of the spring, other buds, in many species of trees, are generated, which in every respect perform the office of those which previously existed, except that they never afford fruit or blossoms.”
Claim · model-written summary
The author considers the hypothesis that replacement buds originate from pre-organized germs probably erroneous.
Verbatim
e0“Du Hamel conceived that reproduced buds sprang from pre-organized germs; but the existence of such germs has not, in any instance, been proved”
e1“the roots, and trunk, and branches, of many species of trees will, under proper management, afford buds from every part of their surfaces”
e2“the opinions of this illustrious physiologist are, in this case, probably erroneous.”