A single-page encyclopedia entry on cochineal, the scale insect (Coccus cacti) used to produce scarlet and crimson dye. It covers the insect's etymology and life cycle, cultivation on nopal cactus in Mexico, harvesting, killing and drying methods, and transplantation to the Canary Islands, Java and Algeria. It notes the dye's use on wool and silk and its decline due to cost and replacement by coal-tar dyes.