Complementarism [microform] : physical and psychical
A 1908 Toronto treatise on complementary colour theory by David Strathy Dix, issued by the University Library and distributed as a microform through Canadiana.org, aimed at students of physics and colour. The pictures are plain black-line colour circles, each with numbered segments and chords drawn across the disc to link paired hues, with a legend of named colour pairs on the last page; a designer might borrow the radial hue-wheel structure and the tangle of intersecting lines as a diagram motif for colour relationships.
![Picture 1 of 4 from Complementarism [microform] : physical and psychical (1908), leaf 35](https://img.insideoutlibrary.com/img/200/ia-cihm_97962-35-0.webp)
![Picture 2 of 4 from Complementarism [microform] : physical and psychical (1908), leaf 38](https://img.insideoutlibrary.com/img/200/ia-cihm_97962-38-0.webp)
![Picture 3 of 4 from Complementarism [microform] : physical and psychical (1908), leaf 41](https://img.insideoutlibrary.com/img/200/ia-cihm_97962-41-0.webp)
![Picture 4 of 4 from Complementarism [microform] : physical and psychical (1908), leaf 45](https://img.insideoutlibrary.com/img/200/ia-cihm_97962-45-0.webp)