Based on Auguste Comte, Ostwald developed within his philosophy of nature a â€œpyramid of scienceâ€ in which a â€œscience of orderâ€ (he called it also “Mathetik”) was the basis.
Ostwald ordered the sciences within a pyramid. When working on a new topic, e.g. the color theory, he combined the new topic with every layer of his pyramid in a combinatorical way to exhaust all aspect of this subject. So he developed first a basic theory of colors (e.g. EA in the picture), then viewed color theory from a physical (EB), chemical (EC), physiological or biological (ED) and psychological (E?!) view.
Ostwald planned and published a multi-vlolume work on color theory whose partial volumes in each case dealed with one of the views mentioned above. He founded a journal “Die Frabe” (The color), starting 1921, which used his monographic principle and ordered the single issues, which contain only one article, according his – as he called it – “Comte-Ostwaldian” system of concepts.