Search the Dictionary

by means of a degree of heat sufficient to melt the one and not the other, as an alloy of copper and lead; liquation. Ure.

d green, a very durable pigment, of a vivid light green color, made from the arseniate of copper; green bice; Scheele's green; -- also used adjectively; as, emerald green crystals. -- Emerald Isle, a name given to Ireland on account of the brightness of its verdure. -- Emerald spodumene, or Lithia emerald. (Min.) See…

er, occurring in small orthorhombic crystals, also massive. It contains sulphur, arsenic, copper, and often silver.

A hydrous arseniate of copper, of an emerald-green color; -- so called from Erin, or Ireland, where it occurs.

Partaking of the substance or nature of copper, or of the rust copper; resembling the trust of copper or verdigris; æruginous.

A metallic mineral, a selenide of copper and silver; -- so called by Berzelius on account of its being found soon after the discovery of the metal selenium.

A mineral occurring in transparent emerald green crystals. It is hydrous arseniate of copper.

The fourth of a penny; a small copper coin of Great Britain, being a cent in United States currency.

signed by Ferranti, for currents of high potential, and consisting of concentric tubes of copper separated by an insulating material composed of paper saturated with black mineral wax.

Copper sulphide, used to color glass. Hebert.

le wheel; -- a vane. -- Float case (Naut.), a caisson used for lifting a ship. -- Float copper or gold (Mining), fine particles of metallic copper or of gold suspended in water, and thus liable to be lost. -- Float ore, water-worn particles of ore; fragments of vein material found on the surface, away from the vein…

A thin leaf of sheet copper silvered and burnished, and afterwards coated with transparent colors mixed with isinglass; -- employed by jewelers to give color or brilliancy to pastes and inferior stones. Ure.

A large copper vessel used for hot amalgamation.

nd, an unreasonable, silly, profitless adventure or undertaking. -- Fool's gold, iron or copper pyrites, resembling gold in color. -- Fool's paradise, a name applied to a limbo (see under Limbo) popularly believed to be the region of vanity and nonsense. Hence, any foolish pleasure or condition of vain self-satistact…

. A black pigment used in copperplate printing, prepared by burning vine twigs, the lees of wine, etc. McElrath.

ghtening of a fused globule of gold or silver, when the last film of the oxide of lead or copper leaves its surface; -- also called blick. A phenomenon called, by the old chemists, fulguration. Ure.

A copperplate produced by the method of galvanography; also, a picture printed from such a plate.

A method of producing by means of electrotyping process (without etching) copperplates which can be printed from in the same manner as engraved plates.

te, a prepared food for caged birds. -- German process (Metal.), the process of reducing copper ore in a blast furnace, after roasting, if necessary. Raymond. -- German sarsaparilla, a substitute for sarsaparilla extract. -- German sausage, a polony, or gut stuffed with meat partly cooked. -- German silver (Chem.),…

ulphides, mostly dark-colored, which have a brilliant metallic luster, as the sulphide of copper, called copper glance. Glance coal, anthracite; a mineral composed chiefly of carbon. -- Glance cobalt, cobaltite, or gray cobalt. -- Glance copper, c -- Glance wood, a hard wood grown in Cuba, and used for gauging instru…