. The power of movement in plants . Plants; Botany. '208 CIECUMNUTATION OP STEMS. Chap. IV, they wero found to be still circumnutating, but on a yet smaller scale. (12.) Oazania rmgens (Corapositse, Fam. 122).—The circum- nutation of the stem of a young plant, 7 inches in height, as measured to the tip of the highest leaf, was traced during 33 h., and is shown in the accompauying iigure (Fig. 78). Two O''i. Gazania riniens: circanjiiutation of stem traced from 9 March 21st to 6 on 22nd; plnnt kept in Movement of bead at the close of the observations magnified 3-1- ti
. The power of movement in plants . Plants; Botany. '208 CIECUMNUTATION OP STEMS. Chap. IV, they wero found to be still circumnutating, but on a yet smaller scale. (12.) Oazania rmgens (Corapositse, Fam. 122).—The circum- nutation of the stem of a young plant, 7 inches in height, as measured to the tip of the highest leaf, was traced during 33 h., and is shown in the accompauying iigure (Fig. 78). Two O''i. Gazania riniens: circanjiiutation of stem traced from 9 March 21st to 6 on 22nd; plnnt kept in Movement of bead at the close of the observations magnified 3-1- times, here reduced to half the original scale. main lines may be observed running at nearly right angles to two other main lines; but these are interrupted by small loops. (13.) Az'dea Indica (Ericinfse, Fam. 128).—A bush 21 inches in height was selected for observation, and the cirounmutation of its leading shoot was traced during 26 h. 40 m., as shown in the following figure (Fig. 79). (M.) Plumbago Oupennis (Plumbaginese, Fam. 134).—A small lateral branch which projected from a tall freely growing bush, at an angle of 35° aboje the horizon, was selected for obser- vation. For the first 11 h. it moved to a considerable distance in a nearly straight line to one side, owing probably to its having been previously deflected by the light whilst standing in the greenhouse. At on March 7th a fresh tracing was begun and continued for the next 43 h. 40 m. (see Fig. 80). During the first 2 h. it followed nearly the same direction as before, and then changed it a little; daring the night ii moved at nearly right angles to its previous course. Next. 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
