Transactions of the Bose Research Institute Calcutta Life Movements in Plants

The movements in plaints under the stimuli of the environment—the twining of tendrils the effect of temperature the action of light inducing movements sometimes towards and at other times away from the stimulus the diametrically opposite responses of the shoot and the root to the same stimulus of gravity the day and night positions of organs of plants—these and many others present such divers [...] Complexity of the problem–=Contradictory nature of response.—Two classes of tropic responses—Longitudinal transmission of effect of stimplusTransverse tranmission of effect of stimulus—Modification of tropic otirvature by conducting power of tissues and differential excitability of the organ. 2G8 EXIV.—TROPIC CURVATURE WITH LONGITUDINAL TRANMISSION OF EFFECT OF STIMULUS. [...] Direction of the stimulus of gravity—The Geotropic Recorder—Determination of the character of geotropic reaction—Theory of atatoliths—Determination of the latent period—The complete geotropic curve—DeterminT ation of effective direction of stimulus of gravity— Algebraical summation of effects of geotropic and photio stimulus—Analogy between the effects of stimulus of light and of gravity—Relation [...] Characteristics of thermo-gootropic movements—Diurnal movement of Palm trees—Diurnal movement of procubent stems and of leaves—Continuous diurnal record for successive thermal noon—Modification of the diurnal curve—Effect of fluctuation of temperature—Effect of restricted pliability of the organ—Effect of ag' Effect of season—Reversal of the normal rhythm— Effect of constant temperature—Diur [...] –Autnomous pulsation of the leaf of Mimosa—The Photometric Recorder—Effect of direct light—The evening spasmodic fall of the leaf—Diurnal movement of the amputated petiole—Diurnal curve of the petiole of Cassia alata—Respouse of Mimosa to darkness at different parts of the day—After-effect of light at pre-maximum maximum and post-maximum 576 6060ILLUSTRATIONS.