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CONTENTS
ix
page
The Response Recorder—Photographic Recorder—Graduation of intensity of stimulation—Stimulus of torsional vibration—The physiological character of response—Uniform responses—Fatigue—Increasing amplitude of response under increasing intensity of stimulus—Effect of superposition of stimuli—Abolition of response of plant scalded to death—Depression and abolition of response under anæsthetics and poisons • • • • • • • • • • • • • • • • • • • • • • • • • • • • |
306 |
(Journal Linnean Society, 1902.)
Response by variation of electric resistance—The Quadrant Method—Response of leaf to light from a single spark—Effect of increasing intensity of light—Effects of stimulants and depressants—Parallelisms in different modes of response • • • • • • • • • • • • • • • • • • • • • • • • • • • • |
317 |
(Life Movements in Plants, 1923.)
Electromotive response to the stimulus of light—Similar responses to mechanical and photic stimulation—The vegetable photo-electric cell—Normal negative response of the leaf to light—Positive response to light exhibited by too young and too old specimens—Effect of increasing duration of exposure—The D- and A-effects—Positive response of actively assimilating plants—Effect of continued action of light—Unmasking of A- and D-effects • • • • • • • • • • • • • • • • • • • • • • • • • • • • |
323 |
(Life Movements in Plants, 1923.)
The Automatic Recorder of assimilation in plants—The Bubbler—Plant as a sensitive detector of variation of light—Hourly variation of assimilation—Effect of infinitesimal trace of chemical substances on assimilation—Efficiency of photosynthetic organ in storage of solar energy • • • • • • • • • • • • • • • • • • • • • • • • • • • • |
331 |
(Physiology of Photosynthesis, 1925.)
Diurnal periodicity in movements of plants—Effects of variation of temperature and of light—The Selenium cell—The Radiograph—The Wheatstone |
