Note 299 — Chapter V · THE SECOND CHALCITIC AGE OF ALLOYS[242]—BRONZE, BRASS, ETC.: THE AXE AND THE SWORD.

Hence tutaneg and tutanego, which sometimes meant an alloy of tin and bismuth. M. Polo (i. 21) describes ‘tutia’ as very good for the eyes; and his notice of it, and of spodium, reads, according to Colonel Yule, almost like a condensed translation of Galen’s pompholyx, produced from cadmia or carbonate of zinc; and spodos, the residue of the former, which falls on the hearth (De Simp. Med. p. ix.). Matthioli makes pompholyx commonly known in the laboratories by the Arabic name ‘tutia.’ The ‘tutia’ imported into Bombay from the Gulf is made from an argillaceous ore of zinc, moulded into tubular cakes, and baked to a moderate hardness.