: Recoil by Smith George O George Oliver Orban Paul Illustrator - Science fiction; Space stations Fiction; Weapons Fiction; Space pirates Fiction

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THE MECHANICAL RESPONSE OF LIVING SUBSTANCES PAGE Mechanical response--Different kinds of stimuli--Myograph --Characteristics of response-curve: period, amplitude, form--Modification of response-curves 1

ELECTRIC RESPONSE

Conditions for obtaining electric response--Method of injury--Current of injury--Injured end, cuproid: uninjured, zincoid--Current of response in nerve from more excited to less excited--Difficulties of present nomenclature--Electric recorder--Two types of response, positive and negative--Universal applicability of electric mode of response--Electric response a measure of physiological activity--Electric response in plants 5

ELECTRIC RESPONSE IN PLANTS--METHOD OF NEGATIVE VARIATION

Negative variation--Response recorder--Photographic recorder--Compensator--Means of graduating intensity of stimulus--Spring-tapper and torsional vibrator--Intensity of stimulus dependent on amplitude of vibration--Effectiveness of stimulus dependent on rapidity also 17

ELECTRIC RESPONSE IN PLANTS--BLOCK METHOD

Method of block--Advantages of block method--Plant response a physiological phenomenon--Abolition of response by anaesthetics and poisons--Abolition of response when plant is killed by hot water 27

PLANT RESPONSE--ON THE EFFECTS OF SINGLE STIMULUS AND OF SUPERPOSED STIMULI

Effect of single stimulus--Superposition of stimuli--Additive effect--Staircase effect--Fatigue--No fatigue when sufficient interval between stimuli--Apparent fatigue when stimulation frequency is increased--Fatigue under continuous stimulation 35

PLANT RESPONSE--ON DIPHASIC VARIATION

Diphasic variation--Positive after-effect and positive response--Radial E.M. variation 44

PLANT RESPONSE--ON THE RELATION BETWEEN STIMULUS AND RESPONSE

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