. The power of movement in plants. Plants; Botany. W5 OIRCUMNUTATION OF SEEDLINGS. Chap. I this was in parts straight and in parts decidedly zigzag, indicating circumnutation. On the following day the other secondary shoot was observed; it was a little more advanced in age, for the upper part, instead of depending Yertically downwards, stood at an angle of 45° above the horizon. The tip of the shoot pro- jected obliquely "4 of an inch above the ground, but by the close of our observations, which lasted 47 h., it had grown, chiefly towards its base^ to a height of ' 85 of an inch. The fil
. The power of movement in plants. Plants; Botany. W5 OIRCUMNUTATION OF SEEDLINGS. Chap. I this was in parts straight and in parts decidedly zigzag, indicating circumnutation. On the following day the other secondary shoot was observed; it was a little more advanced in age, for the upper part, instead of depending Yertically downwards, stood at an angle of 45° above the horizon. The tip of the shoot pro- jected obliquely "4 of an inch above the ground, but by the close of our observations, which lasted 47 h., it had grown, chiefly towards its base^ to a height of ' 85 of an inch. The filament was fixed transversely to the basal and almost upright half of the shoot, close beneath the lowest Rcale-like appendage. The circum- nutating course pursued is shown in the accompanying figure (Kg. 42). The actual distance traversed from side to side was about "04 of an inch. Finns pinaster (Coniferse). â A young hypocotyl, with the tips of the cotyledons still enclosed within the seed-coats, was at first only -35 of an inch in height; but the upper part grew so rapidly that at the end of our observations it was â â 6 in height,. \ Corylus avellana: circumnuta- tion of a young shoot emitted from the epicotyl, the apex of which had been injured, traced on a horizontal glass, from 9 Keb. 2nd to 8 4th. Movement ol bead magnified about 27 times. Fig. 43. 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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Keywords: ., bookcentury1800, bookdecade, booksubjectbotany, booksubjectplants
