. Timber and some of its diseases. Timber; Trees. 228 TIMBER AND SOME OF ITS DISEASES, [chap. semi-parasitic fungus, as it tries to heal over the wound. The local disturbances in growth kept up by the mycelium feeding on the contents of the cells of these Fig. 34.—Piece of tree stem affected with " canker.'* The injury commenced after the two inner zones of wood (i and 2) had been developed : it extended further in successive periods of growth, as shown by the receding zones 3, 4, 5, and 6, until all the cambium and cortex was destroyed except the pieces D to D. Cam, cam- bium ; C
. Timber and some of its diseases. Timber; Trees. 228 TIMBER AND SOME OF ITS DISEASES, [chap. semi-parasitic fungus, as it tries to heal over the wound. The local disturbances in growth kept up by the mycelium feeding on the contents of the cells of these Fig. 34.—Piece of tree stem affected with " canker.'* The injury commenced after the two inner zones of wood (i and 2) had been developed : it extended further in successive periods of growth, as shown by the receding zones 3, 4, 5, and 6, until all the cambium and cortex was destroyed except the pieces D to D. Cam, cam- bium ; Cor, living cortex ; D Z>, dead tissues. At each period of growth the attempt has been made to heal over the wound, as shown by the successively receding lips. \ - tissues lead to the irregular growths and hypertrophies referred to ; the wounds are kept open and " sore," or \. 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 Ward, H. Marshall (Harry Marshall), 1854-1906. London, Macmillan
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Keywords: ., bo, bookcentury1900, bookdecade1900, bookpublisherlondonmacmillan
