. The power of movement in plants . Plants; Botany. Oerius speciocissimus: circumnutatioa of stem, illuminated from above, tracea on a horizontal glass, in A from 9 to on Nov. 2,3rd; and in B from on the 24th to 8 on the 25th. Movement of the bead in B magnified about 38 times. (11.) H'"Ura \elix (Araliaeese, Fam. 114).—The stem is known to be apheliotropic, and several seedlings growing in a pot in the greenhouse became bent in the middle of the summer at right angles fi om the light. On Sept. 2nd some of these stems were tied up so as to stand vertically, a
. The power of movement in plants . Plants; Botany. Oerius speciocissimus: circumnutatioa of stem, illuminated from above, tracea on a horizontal glass, in A from 9 to on Nov. 2,3rd; and in B from on the 24th to 8 on the 25th. Movement of the bead in B magnified about 38 times. (11.) H'"Ura \elix (Araliaeese, Fam. 114).—The stem is known to be apheliotropic, and several seedlings growing in a pot in the greenhouse became bent in the middle of the summer at right angles fi om the light. On Sept. 2nd some of these stems were tied up so as to stand vertically, and were placed before a north-east window; but to our surprise they were now decidedly heliotropic, for during 4 days they curved them- selves towards the light, and their course being traced on a horizontal glass, was strongly zigzag. During the 6 succeed- ing days they circumnutated over the same small space at a slow rate, but there could be no doubt about their circumnuta- tion. The plants were kept exactly in the same place before the window, and after an interval of 15 days the stems were again observed during 2 days and their movements traced, and 10. 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
