. The power of movement in plants . Plants; Botany. Chap. IV. CIKCUMNUTATION OF STOLONS. 217 from Bide to side as up and down; and differed in this respect remarkably from the movement in the previous cases. During the latter part of the day, viz., between 3 and , the Kig. 'iataK 'Tao' r-3'pm. ^ffaan. Fraga^'iii; circummitation of another and younger stolon, traced from 8 to Figure reduced to one-half of original scale. actual distance travelled by the apex amounted to 1'15 inch; and in the course of the whole day to at least 2'67 inch. This is an amount of m
. The power of movement in plants . Plants; Botany. Chap. IV. CIKCUMNUTATION OF STOLONS. 217 from Bide to side as up and down; and differed in this respect remarkably from the movement in the previous cases. During the latter part of the day, viz., between 3 and , the Kig. 'iataK 'Tao' r-3'pm. ^ffaan. Fraga^'iii; circummitation of another and younger stolon, traced from 8 to Figure reduced to one-half of original scale. actual distance travelled by the apex amounted to 1'15 inch; and in the course of the whole day to at least 2'67 inch. This is an amount of movement almost comparable with that of some cUmbing plants. The pame stolon was observed on the following day, and now it moved in a somewhat less complex manner, in a plane not far from vertical. The extreme amount of actual movement was 1-55 inch in one direction, and '6 inch in another direction at right angles. During neither of these days did the stolon bend downwards through geotropism or its own weight. Four stolons still attached to the plant were laid on damp sand in the back of a room, with their tips facing the north-east windows. They were thus placed because De Vries says * that they are apheliotropic when exposed to the light of the sun; but we could not perceive any effect from the above feeble degree of illumination. "We may add that on another occasion, late in the summer, some stolons, placed upright before a south-west window * ' Arbeiten Bot. Inst., Wiirzburg,' 1872, p. 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 : D. Appleton
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Keywords: ., bookcentury1800, booksubjectbotany, booksubjectplants, bookyear18
