A system of chemistry applied to dyeing
A System of Chemistry Applied to Dyeing is a Philadelphia textbook of 1869 by James Napier and A. A. Fesquet, written for dyers and chemists working with coal-tar colours. Its pictures are plain line drawings of laboratory apparatus, including flasks, stoppered bottles, bent glass tubing and a gas-generating set on a bench, numbered with lettered keys. A designer could take from them the clean, technical look of nineteenth-century scientific diagrams, with fine hatching and labelled components.













