Théorie scientifique des couleurs : et leurs applications a l'art et a l'industrie
A French translation of Ogden Rood's 1881 scientific treatise on colour, published in Paris by Librairie Germer Baillière, aimed at painters and manufacturers applying colour theory to art and industry. The four pictures are diagrams: a dial of graduated ticks with a shaded sector, a pie chart with a black wedge labelled in French colour names, stacked horizontal bands tapering into a cone, and a prism-like ray diagram recombining white light into a spectrum band. A designer might borrow their clean line-and-tone logic for colour wheels, spectrum charts, and rule-based colour charts.
