A one-page encyclopedia entry on dyeing as understood in the 1870s. It distinguishes substantive and adjective dyes, describes the stages of mordanting, ageing, dunging, dyeing and clearing, and lists common mordants and dung substitutes. It also summarizes how blacks, blues, reds and yellows were produced on wool, silk, cotton and linen, and mentions the new aniline dyes and the chemists who studied dyeing.