The principles and practice of harmonious colouring : in oil, water, and photographic colours, especially as applied to photographs on paper, glass, and silver-plate
A colour-theory manual by James Newman, published in London in 1859 by Brodie & Middleton, aimed at artists and photographers who hand-coloured oil, water, and photographic prints. The pictures are plain diagrams: a labelled colour wheel with sixteen segments, a numbered six-part sector wheel, and a star-shaped triangle chart of primary, secondary, and tertiary hues titled The Relations and Harmonies of Colour, useful for planning palettes and checking complementary pairings.
