Farbenchemisches Praktikum : zugleich Einführung in die Farbenchemie und Färbereitechnik
A German laboratory manual on dye chemistry and dyeing technique, written by chemists Richard Möhlau and Hans Bucherer and published in Leipzig in 1908 for students of colour chemistry. Its pictures are chemical structural formulas of azo dyes, anthraquinone-type compounds and reaction schemes with ring structures, arrows and roman-numbered compounds, which a designer might use as abstract geometric line patterns of hexagons, bonds and diagrammatic arrows.
