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HIGH MAGNIFICATION CRESCOGRAPH
growth followed by quick recovery, as seen in the series of records given in figure 113 (c). The perceptive
Fig. 113. Record of responses of plant to wireless stimulation. (a) Response to feeble stimulus by acceleration of growth; (b) response to strong stimulus by retardation of growth; (c) response to medium stimulation—retardation followed by recovery. Down-curve represents acceleration, and up-curve retardation of growth (seedling of wheat).
range of the plant is inconceivably greater than ours; it not only perceives, but also responds to different rays of the vast ethereal spectrum.
(Proc. Roy. Soc. Oct. 1917 and Transactions Bose Institute, 1919.)
