. The care of trees in lawn, street and park, with a list of trees and shrubs for decorative use. Trees; Trees. Callusing and Repairing 91 applied, while in spring the oozing sap of many species \\ill prevent the paint from sticking or the tar from penetrating. If pruned in the fall, the wound wood begins to form in the early spring and is \vell advanced before the fungus spores begin to fly. The com- parative absence of fungus spores in late fall and the fact that the form of the tree is better visible when the foliage Fig 21 —Malleable pmnmg has left it also favors this season as compared wi
. The care of trees in lawn, street and park, with a list of trees and shrubs for decorative use. Trees; Trees. Callusing and Repairing 91 applied, while in spring the oozing sap of many species \\ill prevent the paint from sticking or the tar from penetrating. If pruned in the fall, the wound wood begins to form in the early spring and is \vell advanced before the fungus spores begin to fly. The com- parative absence of fungus spores in late fall and the fact that the form of the tree is better visible when the foliage Fig 21 —Malleable pmnmg has left it also favors this season as compared with the summer. Only those species, which, like the maples and birches, are apt to bleed freely even late in the autumn and early in spring, are best pruned in winter or late summer, although the bleeding is in the main detrimental only because it prevents the paint from adhering. Callusing and Repairing. We will now briefly look at the healing process, a knowledge of which will be useful to the pruner and will assist his judgment, especially as to where and how to locate most advantageousl} the cut in trimming, pruning, and repairing. When, in the natural order of things, a leaf falls, or a piece of bark is sloughed off, as is so conspicuously done in the sycamore, this loss of parts has been gradually prepared for and the w^ound is already cov- ered securely by a cork layer, or Fig 22. — Sheep sheaimg ^ temporary covering has at shears r j , ^ least been provided for by the formation of gum or resin, before this final voluntary loss occurs. When an involuntary physical injury, as the tearing off of a piece of live bark or the breaking of a branch, takes place, a similar process of providing a covering of the wound. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Fernow, B. E. (Bernhard Eduard), 1851-192
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
