Encyclopedia article on bleaching of textile fibers, covering its ancient origins and historical development from sun and grass bleaching to Dutch buttermilk and sulphuric acid methods, then chlorine (1785) and bleaching powder (1799). It describes modern (early 20th-century) processes for cotton, linen, wool, and silk, including scouring of wool and degumming of silk, and ends with a bibliography of English and German works.