A long encyclopedia article on wool from Rees's Cyclopedia (1819), covering the natural history and manufacture of wool. It discusses the definition of wool versus hair, the origins and breeding of fine-woolled sheep (Tarentine, Spanish Merino, Saxony), fineness and softness of fibre, and microscopic diameter measurements by Dr. Parry. It also covers sorting and prices of English wool, washing, greasing, skin and lamb's wool, statistical tables of English wool production by county, wool in Scotland, Ireland and New South Wales, the chemistry of hair, and customs regulations on wool trade.