An 18th-century encyclopedia article on silk from the first edition of the Encyclopedia Britannica. It describes the silkworm and its silk-producing vessels, the spinning of the cocoon, and the selection and handling of cocoons. It also covers how to judge silk quality and weight (Piedmont organzine, Lyons aunes and portees), and the preparation steps of reeling, spinning, milling, bleaching and dyeing, including floretta from waste cocoons.