. Botany of the living plant. Botany; Plants. Fig. 16. Continuity of protoplasm through the walls of plant-cells. A. Cells of the pulvinus of Robinia, after treatment with sulphuric acid to swell the walls, and staining of the protoplasm with methyl violet. ( x 55°-) B Cell-wall of a single cell of the endosperm of Lodoicea, showing the pits and the protoplasmic threads, traversing both the thin pit-membranes and the thickened regions of the wall. ( x 400.) (After Gardiner.) There is reason to believe that the protoplasm is the seat of physio- logical activity, and since the protoplasm of adjo
. Botany of the living plant. Botany; Plants. Fig. 16. Continuity of protoplasm through the walls of plant-cells. A. Cells of the pulvinus of Robinia, after treatment with sulphuric acid to swell the walls, and staining of the protoplasm with methyl violet. ( x 55°-) B Cell-wall of a single cell of the endosperm of Lodoicea, showing the pits and the protoplasmic threads, traversing both the thin pit-membranes and the thickened regions of the wall. ( x 400.) (After Gardiner.) There is reason to believe that the protoplasm is the seat of physio- logical activity, and since the protoplasm of adjoining cells is con- nected by threads traversing the cell-walls, whole tracts of tissue will be able to share a common life. This leads us to expect that organs will react as a whole under external stimulus, and that though the cell may appear to be an individual structural unit, still each cell takes its place as a constituent of that physiological commonwealth which we call the Plant-Organism. While we thus recognise the physiological importance of the con- tinuity of protoplasm through the cell-walls, it should be remembered what circumstance it is that has made it necessary. It is the presence. 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; Wardlaw, C. W. (Claude Wilson), 1901-. London, Macmillan and Co. , ltd.
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