Life Movements in Plants
Sir Jagadis Chunder Bose
Life Movements in Plants
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English
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LIFE MOVEMENTS IN PLANTS
CONTENTS
ILLUSTRATIONS.
PART I. RESPONSE OF PLANT ORGANS.
I.—THE PROBLEM OF MOVEMENT IN PLANTS
II.—THE “PRAYING” PALM TREE
THE RECORDING APPARATUS.
UNIVERSALITY OF TREE MOVEMENT.
THE CAUSE OF PERIODIC MOVEMENT.
PERIODIC MOVEMENT OF TREES AND DIURNAL VARIATION OF MOTO-EXCITABILITY IN MIMOSA PUDICA.
RELATIVE EFFECTS OF LIGHT AND TEMPERATURE.
PHYSIOLOGICAL CHARACTER OF THE MOVEMENT.
TRANSPIRATION AND DIURNAL MOVEMENT.
EFFECT OF VARIATION OF TEMPERATURE ON GEOTROPIC CURVATURE.
REVERSAL OF NATURAL RHYTHM.
SUMMARY.
THE RECORDING APPARATUS.
UNIVERSALITY OF TREE MOVEMENT.
THE CAUSE OF PERIODIC MOVEMENT.
PERIODIC MOVEMENT OF TREES AND DIURNAL VARIATION OF MOTO-EXCITABILITY IN MIMOSA PUDICA.
RELATIVE EFFECTS OF LIGHT AND TEMPERATURE.
PHYSIOLOGICAL CHARACTER OF THE MOVEMENT.
TRANSPIRATION AND DIURNAL MOVEMENT.
EFFECT OF VARIATION OF TEMPERATURE ON GEOTROPIC CURVATURE.
REVERSAL OF NATURAL RHYTHM.
SUMMARY.
III.—ACTION OF STIMULUS ON VEGETABLE TISSUES
RESPONSE RECORDERS.
RESPONSE OF A RADIAL ORGAN.
RESPONSE OF AN ANISOTROPIC ORGAN.
RESPONSE OF THE PULVINUS OF MIMOSA PUDICA.
RESPONSE OF PULVINUS OF MIMOSA TO VARIATION OF TURGOR.
DIFFERENT MODES OF STIMULATION.
SUMMARY.
RESPONSE RECORDERS.
RESPONSE OF A RADIAL ORGAN.
RESPONSE OF AN ANISOTROPIC ORGAN.
RESPONSE OF THE PULVINUS OF MIMOSA PUDICA.
RESPONSE OF PULVINUS OF MIMOSA TO VARIATION OF TURGOR.
DIFFERENT MODES OF STIMULATION.
SUMMARY.
IV.—DIURNAL VARIATION OF MOTO-EXCITABILITY IN MIMOSA
UNIFORM PERIODIC STIMULATION.
THE RESPONSE RECORDER.
EFFECTS OF EXTERNAL CONDITIONS ON EXCITABILITY.
EFFECTS OF LIGHT AND DARKNESS.
EFFECT OF EXCESSIVE TURGOR.
INFLUENCE OF TEMPERATURE.
DIURNAL VARIATION OF EXCITABILITY.
EFFECT OF TEMPERATURE ON VARIATION OF EXCITABILITY.
EFFECT OF PHYSIOLOGICAL INERTIA.
EFFECT OF SEASON.
SUMMARY.
UNIFORM PERIODIC STIMULATION.
THE RESPONSE RECORDER.
EFFECTS OF EXTERNAL CONDITIONS ON EXCITABILITY.
EFFECTS OF LIGHT AND DARKNESS.
EFFECT OF EXCESSIVE TURGOR.
INFLUENCE OF TEMPERATURE.
DIURNAL VARIATION OF EXCITABILITY.
EFFECT OF TEMPERATURE ON VARIATION OF EXCITABILITY.
EFFECT OF PHYSIOLOGICAL INERTIA.
EFFECT OF SEASON.
SUMMARY.
V.—RESPONSE OF PETIOLE-PULVINUS PREPARATION OF MIMOSA PUDICA
EFFECT OF WOUND OR SECTION IN MODIFICATION OF NORMAL EXCITABILITY.
THE CHANGE OF EXCITABILITY AFTER IMMERSION IN WATER.
QUANTITATIVE DETERMINATION OF THE RATE OF DECAY OF EXCITABILITY IN AN ISOLATED PREPARATION.
EFFECT OF AMPUTATION OF UPPER HALF OF PULVINUS.
EFFECT OF REMOVAL OF THE LOWER HALF.
INFLUENCE OF THE WEIGHT OF LEAF ON RAPIDITY OF RESPONSIVE FALL.
ACTION OF CHEMICAL AGENTS.
EFFECT OF “FATIGUE” ON RESPONSE.
THE INFLUENCE OF CONSTANT ELECTRIC CURRENT ON RECOVERY.
ACTION OF LIGHT AND DARKNESS ON EXCITABILITY.
SUMMARY.
EFFECT OF WOUND OR SECTION IN MODIFICATION OF NORMAL EXCITABILITY.
THE CHANGE OF EXCITABILITY AFTER IMMERSION IN WATER.
QUANTITATIVE DETERMINATION OF THE RATE OF DECAY OF EXCITABILITY IN AN ISOLATED PREPARATION.
EFFECT OF AMPUTATION OF UPPER HALF OF PULVINUS.
EFFECT OF REMOVAL OF THE LOWER HALF.
INFLUENCE OF THE WEIGHT OF LEAF ON RAPIDITY OF RESPONSIVE FALL.
ACTION OF CHEMICAL AGENTS.
EFFECT OF “FATIGUE” ON RESPONSE.
THE INFLUENCE OF CONSTANT ELECTRIC CURRENT ON RECOVERY.
ACTION OF LIGHT AND DARKNESS ON EXCITABILITY.
SUMMARY.
VI.—ON CONDUCTION OF EXCITATION IN PLANTS
PREFERENTIAL DIRECTION OF CONDUCTION.
EFFECT OF TEMPERATURE.
EFFECT OF SEASON.
EFFECT OF AGE.
EFFECT OF DESICCATION ON CONDUCTING TISSUES.
INFLUENCE OF TONIC CONDITION ON CONDUCTIVITY.
SUMMARY.
PREFERENTIAL DIRECTION OF CONDUCTION.
EFFECT OF TEMPERATURE.
EFFECT OF SEASON.
EFFECT OF AGE.
EFFECT OF DESICCATION ON CONDUCTING TISSUES.
INFLUENCE OF TONIC CONDITION ON CONDUCTIVITY.
SUMMARY.
VII.—ON ELECTRIC CONTROL OF EXCITATORY IMPULSE
METHOD OF CONDUCTIVITY BALANCE.
CONTROL OF TRANSMITTED EXCITATION IN AVERRHOA BILIMBI.
ELECTRIC CONTROL OF NERVOUS IMPULSE IN ANIMALS.
EFFECTS OF DIRECTION OF CURRENT ON VELOCITY OF TRANSMISSION.
DETERMINATION OF VARIATION OF CONDUCTIVITY BY METHOD OF MINIMAL STIMULUS AND RESPONSE.
AFTER-EFFECTS OF HOMODROMOUS AND HETERODROMOUS CURRENTS.
VARIATION OF VELOCITY OF TRANSMISSION.
VARIATION OF INTENSITY OF TRANSMITTED EXCITATION UNDER HETERODROMOUS AND HOMODROMOUS CURRENTS.
AFTER-EFFECTS OF HETERODROMOUS AND HOMODROMOUS CURRENTS.
LAWS OF VARIATION OF NERVOUS CONDUCTION UNDER THE ACTION OF ELECTRIC CURRENTS.
SUMMARY.
METHOD OF CONDUCTIVITY BALANCE.
CONTROL OF TRANSMITTED EXCITATION IN AVERRHOA BILIMBI.
ELECTRIC CONTROL OF NERVOUS IMPULSE IN ANIMALS.
EFFECTS OF DIRECTION OF CURRENT ON VELOCITY OF TRANSMISSION.
DETERMINATION OF VARIATION OF CONDUCTIVITY BY METHOD OF MINIMAL STIMULUS AND RESPONSE.
AFTER-EFFECTS OF HOMODROMOUS AND HETERODROMOUS CURRENTS.
VARIATION OF VELOCITY OF TRANSMISSION.
VARIATION OF INTENSITY OF TRANSMITTED EXCITATION UNDER HETERODROMOUS AND HOMODROMOUS CURRENTS.
AFTER-EFFECTS OF HETERODROMOUS AND HOMODROMOUS CURRENTS.
LAWS OF VARIATION OF NERVOUS CONDUCTION UNDER THE ACTION OF ELECTRIC CURRENTS.
SUMMARY.
VIII.—EFFECT OF INDIRECT STIMULUS ON PULVINATED ORGANS
DUAL CHARACTER OF THE TRANSMITTED IMPULSE.
EFFECT OF DISTANCE OF APPLICATION OF STIMULUS.
EFFECTS OF DIRECT AND INDIRECT STIMULUS.
DUAL CHARACTER OF THE TRANSMITTED IMPULSE.
EFFECT OF DISTANCE OF APPLICATION OF STIMULUS.
EFFECTS OF DIRECT AND INDIRECT STIMULUS.
IX.—MODIFYING INFLUENCE OF TONIC CONDITION ON RESPONSE
THEORY OF ASSIMILATION AND DISSIMILATION.
UNMASKING OF THE POSITIVE EFFECT.
ARTIFICIAL DEPRESSION OF TONIC CONDITION AND MODIFICATION OF RESPONSE.
POSITIVE RESPONSE IN SUB-TONIC SPECIMEN.
SUMMARY.
THEORY OF ASSIMILATION AND DISSIMILATION.
UNMASKING OF THE POSITIVE EFFECT.
ARTIFICIAL DEPRESSION OF TONIC CONDITION AND MODIFICATION OF RESPONSE.
POSITIVE RESPONSE IN SUB-TONIC SPECIMEN.
SUMMARY.
PART II. GROWTH AND ITS RESPONSIVE VARIATIONS.
X.—THE HIGH MAGNIFICATION CRESCOGRAPH FOR RESEARCHES ON GROWTH[S]
METHOD OF HIGH MAGNIFICATION.
AUTOMATIC RECORD OF THE RATE OF GROWTH.
EXPERIMENTAL ADJUSTMENTS.
DETERMINATION OF LATENT PERIOD AND TIME-RELATIONS OF RESPONSE.
MAGNETIC AMPLIFICATION.
THE DEMONSTRATION CRESCOGRAPH.
SUMMARY.
METHOD OF HIGH MAGNIFICATION.
AUTOMATIC RECORD OF THE RATE OF GROWTH.
EXPERIMENTAL ADJUSTMENTS.
DETERMINATION OF LATENT PERIOD AND TIME-RELATIONS OF RESPONSE.
MAGNETIC AMPLIFICATION.
THE DEMONSTRATION CRESCOGRAPH.
SUMMARY.
XI.—EFFECT OF TEMPERATURE ON GROWTH
METHOD OF DISCONTINUOUS OBSERVATION.
METHOD OF CONTINUOUS OBSERVATION.
DETERMINATION OF THE CARDINAL POINTS OF GROWTH.
THE THERMO-CRESCENT CURVE.
SUMMARY.
METHOD OF DISCONTINUOUS OBSERVATION.
METHOD OF CONTINUOUS OBSERVATION.
DETERMINATION OF THE CARDINAL POINTS OF GROWTH.
THE THERMO-CRESCENT CURVE.
SUMMARY.
XII.—THE EFFECT OF CHEMICAL AGENTS ON GROWTH
EFFECT OF STIMULANTS.
EFFECT OF ANÆSTHETICS.
ACTION OF DIFFERENT GASES.
ACTION OF POISONS.
SUMMARY.
EFFECT OF STIMULANTS.
EFFECT OF ANÆSTHETICS.
ACTION OF DIFFERENT GASES.
ACTION OF POISONS.
SUMMARY.
XIII.—EFFECT OF VARIATION OF TURGOR AND OF TENSION ON GROWTH
RESPONSE TO POSITIVE VARIATION OF TURGOR.
EFFECT OF ARTIFICIAL INCREASE OF INTERNAL HYDROSTATIC PRESSURE.
RESPONSE TO NEGATIVE VARIATION OF TURGOR.
RESPONSE OF MOTILE AND GROWING ORGANS TO VARIATION OF TURGOR.
EFFECT OF EXTERNAL TENSION.
SUMMARY.
RESPONSE TO POSITIVE VARIATION OF TURGOR.
EFFECT OF ARTIFICIAL INCREASE OF INTERNAL HYDROSTATIC PRESSURE.
RESPONSE TO NEGATIVE VARIATION OF TURGOR.
RESPONSE OF MOTILE AND GROWING ORGANS TO VARIATION OF TURGOR.
EFFECT OF EXTERNAL TENSION.
SUMMARY.
XIV.—EFFECT OF ELECTRIC STIMULUS ON GROWTH
EFFECT OF ELECTRIC STIMULUS OF VARYING INTENSITY AND DURATION.
CONTINUITY BETWEEN INCIPIENT AND ACTUAL CONTRACTION.
SUMMARY.
EFFECT OF ELECTRIC STIMULUS OF VARYING INTENSITY AND DURATION.
CONTINUITY BETWEEN INCIPIENT AND ACTUAL CONTRACTION.
SUMMARY.
XV.—EFFECT OF MECHANICAL STIMULUS ON GROWTH
EFFECT OF MECHANICAL IRRITATION.
EFFECT OF WOUND.
SUMMARY.
EFFECT OF MECHANICAL IRRITATION.
EFFECT OF WOUND.
SUMMARY.
XVI.—ACTION OF LIGHT ON GROWTH
METHOD OF EXPERIMENT.
NORMAL EFFECT OF LIGHT.
DETERMINATION OF THE LATENT PERIOD.
EFFECT OF INTENSITY OF LIGHT.
EFFECT OF CONTINUOUS LIGHT.
EFFECTS OF DIFFERENT RAYS OF THE SPECTRUM.
SUMMARY.
METHOD OF EXPERIMENT.
NORMAL EFFECT OF LIGHT.
DETERMINATION OF THE LATENT PERIOD.
EFFECT OF INTENSITY OF LIGHT.
EFFECT OF CONTINUOUS LIGHT.
EFFECTS OF DIFFERENT RAYS OF THE SPECTRUM.
SUMMARY.
XVII.—EFFECT OF INDIRECT STIMULUS ON GROWTH
MECHANICAL AND ELECTRICAL RESPONSE TO INDIRECT STIMULUS.
VARIATION OF GROWTH UNDER INDIRECT STIMULUS.
SUMMARY.
MECHANICAL AND ELECTRICAL RESPONSE TO INDIRECT STIMULUS.
VARIATION OF GROWTH UNDER INDIRECT STIMULUS.
SUMMARY.
XVIII.—RESPONSE OF GROWING ORGANS IN STATE OF SUB-TONICITY
ABNORMAL ACCELERATION OF GROWTH UNDER STIMULUS.
CONTINUITY BETWEEN ABNORMAL AND NORMAL RESPONSES.
SUMMARY.
ABNORMAL ACCELERATION OF GROWTH UNDER STIMULUS.
CONTINUITY BETWEEN ABNORMAL AND NORMAL RESPONSES.
SUMMARY.
XIX.—RESUMPTION OF AUTONOMOUS PULSATION AND OF GROWTH UNDER STIMULUS
REVIVAL OF AUTONOMOUS PULSATION UNDER STIMULUS.
REVIVAL OF GROWTH UNDER STIMULUS.
LAWS OF EFFECTS OF DIRECT AND INDIRECT STIMULUS.
SUMMARY.
REVIVAL OF AUTONOMOUS PULSATION UNDER STIMULUS.
REVIVAL OF GROWTH UNDER STIMULUS.
LAWS OF EFFECTS OF DIRECT AND INDIRECT STIMULUS.
SUMMARY.
XX.—ACTION OF LIGHT AND WARMTH ON AUTONOMOUS ACTIVITY
THE OSCILLATING RECORDER.
RECORD OF PULSATION OF DESMODIUM GYRANS.
EFFECT OF DIFFUSE LIGHT ON PULSATION OF DESMODIUM.
EFFECT OF RISE OF TEMPERATURE ON PULSATION.
SUMMARY.
THE OSCILLATING RECORDER.
RECORD OF PULSATION OF DESMODIUM GYRANS.
EFFECT OF DIFFUSE LIGHT ON PULSATION OF DESMODIUM.
EFFECT OF RISE OF TEMPERATURE ON PULSATION.
SUMMARY.
XXI.—A COMPARISON OF RESPONSES IN GROWING AND NON-GROWING ORGANS
CONTRACTILE RESPONSE OF GROWING AND NON-GROWING ORGANS.
CONTRACTILE RESPONSE OF PULVINATED AND GROWING ORGANS.
MODIFICATION OF RESPONSE BY CONDITION OF SUB-TONICITY.
EFFECTS OF DIRECT AND INDIRECT STIMULUS.
MODIFICATION OF AUTONOMOUS ACTIVITY.
EXCITATORY EFFECTS OF VARIOUS STIMULI ON PULVINATED AND GROWING ORGANS.
EFFECT OF LIGHT ON PULVINATED ORGANS.
DIVERSE MODES OF RESPONSE TO STIMULUS.
SUMMARY.
CONTRACTILE RESPONSE OF GROWING AND NON-GROWING ORGANS.
CONTRACTILE RESPONSE OF PULVINATED AND GROWING ORGANS.
MODIFICATION OF RESPONSE BY CONDITION OF SUB-TONICITY.
EFFECTS OF DIRECT AND INDIRECT STIMULUS.
MODIFICATION OF AUTONOMOUS ACTIVITY.
EXCITATORY EFFECTS OF VARIOUS STIMULI ON PULVINATED AND GROWING ORGANS.
EFFECT OF LIGHT ON PULVINATED ORGANS.
DIVERSE MODES OF RESPONSE TO STIMULUS.
SUMMARY.
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