. The power of movement in plants. Plants; Botany. 54 ClilOUMNUTATION OP Ch^p. t tho windows was a little more illmninated than the opposite side- and during the first morning the stem travelled to a greater distance in this direction (to the left in the figure) than it did afterwards when the box was completely protected from light Fig. Quercus (American sp.'): circuinnutation of young stem, traced on hori- zontal glass, from Ftb. 22nd to 24th. Movement of bead greatly magnified at first, but slightly towards the close of the observations—about 10 times
. The power of movement in plants. Plants; Botany. 54 ClilOUMNUTATION OP Ch^p. t tho windows was a little more illmninated than the opposite side- and during the first morning the stem travelled to a greater distance in this direction (to the left in the figure) than it did afterwards when the box was completely protected from light Fig. Quercus (American sp.'): circuinnutation of young stem, traced on hori- zontal glass, from Ftb. 22nd to 24th. Movement of bead greatly magnified at first, but slightly towards the close of the observations—about 10 times on an average. Querctis robur.—Observations were made only on the move- ments of the radicles from germinating acorns, which were allowed to grow downwards in the manner previously described, over plates of smoked glass, inclined at angles between 65° and 69° to the horizon. In four cases the tracks left were almost straight, but the tips had pressed sometimes with more and sometimes with less force on the glass, as shown by the varying thickness of the tracks and by little bridges of soot left across them. In the fifth case the track was slightly serpentine, that is, the tip had moved a little from side to side. In the sixth case (Fig. 41, A) it was plainly serpentine, and the tip had pressed almost equably on the glass in its whole course. In the seventh case (B) the tip had moved both laterally and had pressed. 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
