. Botany of the living plant. Botany. ca Fig. 40. Diagrams illustrating successive steps in the formation of cork in the cells (2) directly below the epidermis (i). A shows the first division. B shows the result of repeated divisions, resulting in a radial row of cells. Of these the outer (a) are cork ; the innermost (c) are phelloderm, which adds to the cortex. (6) represents the cork- cambium. thin walls are changed to impervious cork (Fig. 41 : parts right and left of the drawing). As the cells fit closely without intercellular spaces, they form a complete protective covering. Partly owing
. Botany of the living plant. Botany. ca Fig. 40. Diagrams illustrating successive steps in the formation of cork in the cells (2) directly below the epidermis (i). A shows the first division. B shows the result of repeated divisions, resulting in a radial row of cells. Of these the outer (a) are cork ; the innermost (c) are phelloderm, which adds to the cortex. (6) represents the cork- cambium. thin walls are changed to impervious cork (Fig. 41 : parts right and left of the drawing). As the cells fit closely without intercellular spaces, they form a complete protective covering. Partly owing to the. ''-"mMi TJd pi Fig. 41. Transverse section of the stem of Elder, traversing a lenticel. e = epidermis. ph = phellogen, or cork cambium. /=spongy cells filhng the lenticel. pi=phellogen of the lenticel. />d=phelloderm. ( x 90.) S. growth in bulk within, but chiefly because the cork cuts it off from the living tissues, the epidermis soon dries up, splits, and peels away. The covering of cork having its cells closely fitting together is not only impervious to liquids, but also to gases. Thus the living tissues. 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 Bower, F. O. (Frederick Orpen), 1855-1948. London, Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1919
