V.

THEORY OF COLOURS

The reciprocal effects of colours on objects placed opposite each other (263--271).--Combination of different colours in cast shadows (272).--The effect of colours in the camera obscura (273. 274).--On the colours of derived shadows (275. 276).--On the nature of colours (277. 278).--On gradations in the depth of colours (279. 280).--On the reflection of colours (281--283).--On the use of dark and light colours in painting (284--286).--On the colours of the rainbow (287--288).