. The power of movement in plants. Plants; Botany. Ohap. II. PULVINI OF COTYLEDONS. 119 When tlie cotyledons of 0. corniculat'i were dissected out of a Bced from which they would soon have naturally emerged, no trace of a pulvinus could be detected; and all the cells forming the short petiole, 7 in number in a longitudinal row, were of nearly equal size. In seedlings one or two days old, the pulvinus was so indistinct that we thought at first that it did not exist; but in the middle of the petiole an ill-defined transverse zone of cells could be seen, which were much shorter than those both ab
. The power of movement in plants. Plants; Botany. Ohap. II. PULVINI OF COTYLEDONS. 119 When tlie cotyledons of 0. corniculat'i were dissected out of a Bced from which they would soon have naturally emerged, no trace of a pulvinus could be detected; and all the cells forming the short petiole, 7 in number in a longitudinal row, were of nearly equal size. In seedlings one or two days old, the pulvinus was so indistinct that we thought at first that it did not exist; but in the middle of the petiole an ill-defined transverse zone of cells could be seen, which were much shorter than those both above and below, although of the same breadth with them. They presented the appearance of having been just formed by the transverse division of louger cells; and there can be little doubt that this had occurred, for the cells in the petiole which had Fis-. 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 Darwin, Charles, 1809-1882; Darwin, Francis, Sir, 1848-1925. New York, Appleton
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