[CHAPTER X.]

Extinction of Colour by White Light—Extinction of White Light by Colour p. 126

[CHAPTER XI.]

Primary Colours—Molecular Swings—Colour Sensations—Sensations absent in the Colour-blind p. 133

[CHAPTER XII.]

Formation of Colour Equations—Kœnig's Curves—Maxwell's Apparatus and Curves p. 147

[CHAPTER XIII.]

Match of Compound Colours with Simple Colours—All Colours reduced to Numbers—Method of Matching a Colour with a Spectrum Colour and White Light p. 156

[CHAPTER XIV.]

Complementary Colours—Complementary Pigment Colours—Measurement of Complementary Colours p. 167