Third article in a series on dyeing for arts and crafts workers by Professor Charles E. Pellew of Columbia University. It first describes the practical equipment for a home or studio dye shop: agate pots, gas stoves, glass and wooden stirring rods, rubber gloves, wringers and drying arrangements. It then covers Class II dyes, colors formed by oxidation on the fiber, concentrating on sulphur dyes, with dyeing directions for cotton and silk, typical colors, a list of selected dyes by manufacturer, and after-treatment for fastness.