Colour : an elementary manual for students
Colour: an elementary manual for students is a 1907 London textbook by the chemist Arthur Herbert Church, published by Cassell for students of colour science. Its pictures are plain line diagrams: a segmented colour wheel marked with R, G and B, a white-and-vermilion disc divided by a sawtooth edge, and prism and spectrum ray sketches on dark grounds. A designer could borrow their schematic clarity for explaining colour mixing or light dispersion.
