Copley
JOHN SINGLETON, an American painter; born in Boston, Mass., COPLEY, JOHN SINGLETON, an July 3, 1737; removed to London, England, in 1776, and acquired a reputation as a historical painter. He was elected a member of the Royal Academy in 1779. His most celebrated picture is "Death of Lord Chatham," now in the National Gallery. He died in London, Sept. 9, 1815.
National Gallery. He died in London, French dramatist; born in Paris, Jan. 12, 1842. He was trained for what the Parisians call a ministerial career, but books of verse.
In "Modern Poems," "The Benediction," and "The Strike of the Smiths," we have a very modern note. He died May 23, 1908. melting point, 1,091° C. Copper is a red symbol, Cu.; at. wt. 63.5; sp. gr., 8.95; native state on the S. shore of Lake Superior. It also occurs to a greater exnative state on the S. shore of Lake color as peacock ore, characterized by its Superior. It also occurs to a greater ex- tent as copper pyrites of a brass yellow Montana; as gray copper ore, a sulphide, color as peacock ore, characterized by its copper, so called from its color, in Chile; Montana; as gray copper ore, a sulphide, beria and Australia; and as azurite or blue carbonate in Burra Burra, Australia.
Copper forms several alloys. Brass is an alloy of two-thirds copper and onethird zin zinc; bronze, gun-metal, and bellmetal are alloys of copper with tin. Copper forms two series of compounds, the an alloy of two-thirds copper and onethird zinc; bronze, gun-metal, and bell- metal are alloys of copper with tin. Coppigment for wall papers; it is very poi- sonous. Copper salts are detected by pigment for wall papers; it is very poisonous. giving in an acid solution a black precipitate with H₂S. All salts of copper are poisonous. Verdigris is an acetate of copper, often formed by cooking food in copper vessels.
Production.-Since the census year 1880 the United States has risen to the rank country. The production of copper in the United States in 1919 was 1,310,was 1,908,533,595 pounds. The largest 541,529 pounds. The production in 1918 production was from Arizona, which conwas second with 201,716,335 tributed 536,513,368 pounds. Michigan The production of Utah was 148,057,450 Montana third with 176,189,873 pounds. pounds. Other States producing over Alaska produced 56,534,992 50,000,000 pounds were New Mexico and Nevada. 35 pounds, and pounds. The total value of the production in 1919 was $243,761,000, compared with a value in 1918 of $471,408,000.
The imports of copper ore in 1919 amounted to 49,716,511 pounds. There were imported 263,220,449 pounds of unrefined black copper, and copper in bars, pigs, or other forms. The exports of copper in 1919 amounted to 516,627,775 pounds. copper in 1919 amounted to 516,627,775 History. Copper has been known since a copper age before that of bronze. The prehistoric times. There may have been a copper age before that of bronze. The latter compound metal, an alloy of cop- per and tin, was known long before brass had been made. The word copper occurs once in the Old Testament (Ezra viii: 27), but what is in many places called brass should have been rendered copper. Copper was in use in ancient Assyria. The classical nations were familiar with it, The Greeks brought it from Cyprus, the Copper mines were first opened mines being at Tamassus, near Famagosta.
Co in England A. D. 1189, but not very successfully till A. D. 1689.