[Amber], [132].

Aniline, [3]. Discovered, 1826 ([añil], Span. indigo). First prepared from indigo by means of caustic potash. Found in coal in 1834. Manufactured on a large scale after Perkin's discovery of mauve in 1856.

Anatta, (Anotto, Arnotto, [Roucou]), [111]. A dye obtained from the pulp [surrounding] the seeds of the Bixa orellana; chiefly used in dyeing silk an orange colour, but is of a fugitive nature.

Archil, [52], [53], [54].

[Argol], [132]. The tartar deposited from wines completely fermented, and adhering to the sides of casks as a hard crust. When purified it becomes Cream of Tartar.

[Ash], [41], [120].

Astringents, [19], [26].

B.—Barberry, [41], [120].

[Barwood], [67], [106].

Beck.—A large vessel or tub used in dyeing.