CONTENTS 



Section 

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Section 

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Section 

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Section 

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PART 1 



THE CHIEF FACTS OF NORMAL COLOUR VISION 



I. The Bases of Colour Vision. page 



I The Physical Basis 1 



II. The Anatomical Basis 7 



The Psychological Basis . . . . . . . 17 



The Spectrum as seen by the Light-adapted (Photopio) Eye. 



The Spectrum: Hue, Luminosity, Saturation ... 27 



The Discrimination of Hue in the Spectrum ... 30 



The Mixture of Pure-colour Stimuli 33 



Tlie Luminosity of the Spectrum 42 



The Spectrum as seen by the Dark-adapted (Scotopic) Eye. 



III. 



IL 

 I. 

 II. 

 Ill, 

 IV. 



III. 

 I. 

 IL 



IV. 

 I. 

 II. 



V. 

 I. 



II. 

 Ill 



VI. 

 I. 

 II. 



VII. 

 I. 

 II. 

 Ill 

 IV. 



Adaptation or Temporal Induction 



Scotopia or TwiUght Vision 



Regional Effects. 



The Field of Vision for Colours 



The Macula lutea and Fovea centralis .... 



Temporal Effects. 



Recurrent Vision; the Talbot-Plateau Law; the Flicker 

 Phenomenon ........ 



Successive Induction or After-images .... 

 , The Effects of "Fatigue" 



Areal Effects. 

 The Local Quantitative Effect ...... 



Simultaneous Contrast or Spatial Induction 



The Evolution of Colour Vision. 



Introduction ......... 



The Comparative Psychology of Colour Vision . 



The Colour Vision of Primitive Races . . . . 



The Development of Colour Vision in the Child 



49 

 52 



67 



81 



85 

 101 

 112 



117 

 125 



130 

 131 

 145 

 152 



PART II 



THE CHIEF FACTS OF COLOUR BLINDNESS 



Chap. I. Introduction: Colour Names 158 



Chap. II. Dichromatic Vision 162 



Chap. III. Anomalous Trichromatic Vision 182 



Chap. IV. Monochromatic Vision 186 



