according to Sir George Staunton, is properly speaking, zinc extracted from a rich ore, or calamine. The ore is powdered and mixed with charcoal-dust, and placed in earthen jars over a slow fire, by means of which the metal rises in the form of vapour, in a common distilling apparatus, and afterwards is condensed in water. The calamine from which tutenag is thus extracted, contains very little iron, and no lead or arsenic, so common in the calamine of Europe (See CALAMINE, Encycl.). Hence it is that tutenag is more beautiful than our zinc, and that the white copper of the Chinese takes so fine a polish. See White Copper, in this Supplement.