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A caldron; a copper kettle. [Obs.] "A furnace of a leed." Chaucer.

A Chinese copper coin; a cash. See Cash.

A French copper coin of one fourth the value of a sou.

of an olive-green color, commonly in orthorhombic crystals. It is a hydrous phosphate of copper.

A hydrous sulphate of lead and copper occurring in bright blue monoclinic crystals.

e effects are produced by lines of different width and closeness, cut with the burin upon copper or similar material; also, a plate so engraved. (b) A picture produced by printing from such an engraving. -- Line of battle. (a) (Mil Tactics) The position of troops drawn up in their usual order without any determined ma…

sometric crystals, and also massive. It is a sulphide of cobalt containing some nickel or copper.

A hydrated arseniate of copper, occurring in obtuse pyramidal crystals of a sky-blue or verdigris-green color.

Powdered copper pyrites used in the amalgamation of ores of silver, as at the Spanish mines of Mexico and South America.

Native hydrous carbonate of copper, usually occurring in green mammillary masses with concentric fibrous structure.

One of a race of a brown or copper complexion in the Malay Peninsula and the western islands of the Indian Archipelago.

A process by which copper matte is treated by passing through it a blast of air, to oxidize and remove sulphur. It is analogous in apparatus to the Bessemer process for decarbonizing cast iron. So called from Pierre Manhès, a French metallurgist, who invented it.

A piece of copper of the shape of a horseshoe, used as money by certain tribes of the west coast of Africa. Simmonds.

A kind of brass made in imitation of gold. It contains eighty per cent of copper and twenty of zinc. Ure.

A small copper coin of Spain, equal to three mils American money, less than a farthing sterling. Also, an ancient Spanish gold coin.

To impregnate (wood) with a preservative solution of copper sulphate (often called Mar"ga*ry's flu"id [-riz]).

A name given by coppersmiths to an alloy of copper, tin, iron, etc., usually called white metal. [Written also matt.]

A partly reduced copper sulphide, obtained by alternately roasting and melting copper ore in separating the metal from associated iron ores, and called coarse metal, fine metal, etc., according to the grade of fineness. On the exterior it is dark brown or black, but on a fresh surface is yellow or bronzy in color.…

with a rasplike face, used for making a rough surface on etching ground, or on the naked copper, the effect after biting being very similar to stippled lines.

cotton fabrics, used cacao as a medium of exchange, and were workers of gold, silver, and copper. Their architecture comprised elaborately carved temples and places, and they possessed a superior calendar, and a developed system of hieroglyphic writing, with records said to go back to about 700 a. d.…