CONTENTS 



PART I 



THE CHIEF FACTS OF NORMAL COLOUR VISION 



SECTION I. THE BASES OF COLOUR VISION. PAGE 



Chap. I The Physical Basis . . . . . ... . 1 



Chap. II. The Anatomical Basis 7 



Chap. III. The Psychological Basis 17 



SECTION II. THE SPECTRUM AS SEEN BY THE LIGHT-ADAPTED (PHOTOPIC) EYE. 



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



Chap. II. The Discrimination of Hue in the Spectrum ... 30 



Chap. III. The Mixture of Pure-colour Stimuli 33 



Chap. IV. The Luminosity of the Spectrum ..... 42 



SECTION III. THE SPECTRUM AS SEEN BY THE DARK-ADAPTED (ScoTOPic) EYE. 



Chap. I. Adaptation or Temporal Induction 49 



Chap. II. Scotopia or Twilight Vision ...... 52 



SECTION IV. REGIONAL EFFECTS. 



Chap. I. The Field of Vision for Colours 67 



Chap. II. The Macula lutea and Fovea centralis ... 81 



SECTION V. TEMPORAL EFFECTS. 



Chap. I. Recurrent Vision; the Talbot-Plateau Law; the Flicker 



Phenomenon ........ 85 



Chap. II. Successive Induction or After-images .... 101 



Chap. III. The Effects of "Fatigue" .... 112 



SECTION VI. AREAL EFFECTS. 



Chap. I. The Local Quantitative Effect .... 117 



Chap. II. Simultaneous Contrast or Spatial Induction . . 125 



SECTION VII. THE EVOLUTION OF COLOUR VISION. 



Chap. I. Introduction ...... 130 



Chap. II. The Comparative Psychology of Colour Vision . . . 131 



Chap. III. The Colour Vision of Primitive Races . . . 145 



Chap. IV. The Development of Colour Vision in the Child . 152 



PAET 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 



