Untersuchungen über Triphenylmethanfarbstoffe, Hydrazine und Indole
A German chemistry monograph by Emil Fischer, published in Berlin by J. Springer in 1924, covering research on triphenylmethane dyes, hydrazines and indoles. Its pictures are small and sparse: a heraldic cartouche with a horse's head and an initial S, a winged sun disk with an eye and radiating rays, and typeset chemical equations with structural formulas. A designer might take the emblem-like cartouche and the winged-eye motif as ornament references, and the formulas as clean typographic material.
