A dictionary entry on asbestus (asbestos), the fibrous, fire-resistant mineral also called amianthus or earth-flax. It covers the name's Greek origin, its mineralogy, and its use by the ancients for cloth, paper, napkins and burial wrappings, citing Herodotus, Pliny, Strabo and Marco Polo. Most of the entry is a numbered list of 19 categories of modern uses, each with patents from about 1834 to 1872, including a final entry on asbestus yarn prepared by alkaline treatment and treated like wool.