CONTENTS XXV11 



PART IX.— GENERAL SURVEY AND 

 CONCLUSION 



CHAPTER L 



REVIEW OF RESPONSE, SIMPLE AND MULTIPLE 



PAGE 



Responsive contraction — Kunchangraphic records — Direct and indirect 

 effects of stimulation — Various forms of responsive expression ; (a) 

 Lateral motile response by differential contraction ; (b) Suctional re- 

 sponse ; (c) Growth-response ; (d) Torsional response ; (e) Death 

 response ; (_/") Thermographs of regional death ; (,») Electrical response 

 — Different types of response : (a) Uniform response ; (b) Fatigue ; 

 (c) Staircase response — Excitability — Conductivity — Polar effects of 

 currents — Multiple response — Continuity of multiple and autonomous 

 responses — The ascent of sap . . . . . . . . 703 



CHAPTER LI 



RESPONSIVE GROWTH-CURVATURES IN PLANTS 



Longitudinal growth and its variations — Effect of temperature on growth — 

 Responsive growth-curvature under unilateral stimulation : — 1. Direct 

 unilateral stimulus on the responding organ : (a) Positive response 

 under moderate stimulation ; {!/) Intermediate or neutral response ; (c) 

 Negative response ; (d) Dorsi-ventral positive response ; (e) Dorsi-ventral 

 response which may become negative — 2. Indirect effect of uni- 

 lateral stimulation : (a) Negative response ; (b) Positive response — 

 Responsive action under stimulus of gravity — I Ieliotropic action in radial 

 organs — Heliotropic action in plagiotropic and dorsi-ventral organs — 

 Phototactic movements — Nyctitropic movements ..... 725 



CHAPTER LII 



ON PHYSIOLOGICAL RESPONSE, 

 AND ITS CONTINUITY IN PLANT AND ANIMAL 



Vitalism -Fundamental unity of physiological response in plant and animal 



— Theory of Darwin — Variation as induced by external forces . . 740 



CLASSIFIED LIST OF EXPERIMENTS 755 



INDEX 765 



