Abstract
Abstract An extraordinary diversity of opinion having prevailed amongst naturalists most capable of correct observation, respecting the production and subsequent state of the bark of trees, Mr. Knight has undertaken to investigate the subject : but such are the difficulties of the subject, that, in a course of experiment which has occupied more than twenty years, he has scarcely felt himself prepared, till the present time, even to give an opinion of the manner in which the cortical substance is either generated in the ordinary course of its growth, or re-produced when that which previously existed has been taken off. Du Hamel had shown, that the bark of some species of trees is readily re-produced when the decorticated alburnum is secluded from the air. Mr. Knight has repeated these experiments on the apple, the sycamore, and some other trees, with the same result ; and has also observed, that the wych-elm, in moist and shady situations, will frequently re-produce its bark when no covering whatever has been applied.
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Claims 3
Claim · model-written summary
Bark was reproduced on apple following the covered decortication experiments.
- Taxon
- apple
Malus domesticae0 - Treatment
- decorticated alburnum is secluded from the aire1
- Outcome
- bark of some species of trees is readily re-producede1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the apple, the sycamore, and some other trees, with the same result”
e1“the bark of some species of trees is readily re-produced when the decorticated alburnum is secluded from the air”
Claim · model-written summary
Bark was reproduced on sycamore following the covered decortication experiments.
- Taxon
- sycamoree0
- Treatment
- decorticated alburnum is secluded from the aire1
- Outcome
- bark of some species of trees is readily re-producede1
Not reportedDirection
Verbatim
e0“the apple, the sycamore, and some other trees, with the same result”
e1“the bark of some species of trees is readily re-produced when the decorticated alburnum is secluded from the air”
Claim · model-written summary
Wych-elm frequently reproduced its bark without covering in moist shady situations.
- Taxon
- wych-elme0
- Outcome
- re-produce its barke0
- Qualifier
- no covering whatever has been appliede0
- Setting
- moist and shady situationse0
Not reportedDirection
Verbatim
e0“the wych-elm, in moist and shady situations, will frequently re-produce its bark when no covering whatever has been applied”