COPPER GLANCE 



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COPYRIGHT 



whose mines and smelters have about 3,500 

 employees. Population in 1911, 3,082; in 1916, 

 about 4,000; a large percentage is of foreign 

 birth, consisting mainly of Italians, Poles and 

 Finns. G.E.S. 



COPPER GLANCE, a mineral, one of the 

 chief ores from which copper is extracted. It 

 is also known as chalcocitc, or vitreous copper, 

 and is usually found together with the other 

 important copper ore, known as chalcopyrite, 

 or yellow copper ore. Copper glance is a sul- 

 phide of copper (chemical formula is CuoS), 

 and is composed of nearly eighty per cent 

 copper and twenty per cent sulphur. This 

 mineral is of a dark leaden-gray color, with 

 a metallic luster, which, however, becomes gray 

 or dull when exposed to light. It is soft and 

 can be easily cut with a knife. Copper glance 

 is found in large quantities in the Lake Supe- 

 rior copper region, in New Mexico, near the 

 Gila River in Arizona, and in small quantities 

 near Bristol, Connecticut. In Europe it is 

 found in Cornwall, England, and in some parts 

 of Germany and of Sweden, See COPPER. 



COP'PERHEAD, a very poisonous serpent 

 of the rattlesnake family, found in the United 

 States from Southern New England to the 

 Mexican boundary, below which there are few. 

 It is known by various names, depending on 



COPPERHEAD 

 Below is larger detail of top of head. 



the locality; in the South it is called the 

 cotton-mouth; in other places the pilot snake, 

 the red adder, the red eye, and incorrectly, the 

 moccasin, for its relative, the water moccasin. 

 This snake may grow to be four feet long. Its 

 head is copper-colored, its body light brown 

 or golden, with Y-shaped black marks along 

 its sides, which generally extend to the middle 



of the back. It lies dormant in winter. Its 

 bite is more dangerous than that of a rattle- 

 snake, and is usually fatal unless medical 

 assistance is speedily at hand. However, it is 

 a sluggish creature and does not bite unless 

 molested or surprised. See RATTLESNAKE. 



COPRA, kop'ra, the dried meat or kernel of 

 the cocoanut, one of the principal articles of 

 export from the Pacific islands. It is valued 

 especially for the oil it yields, which is used 

 in the manuufacture of candles and soap. The 

 cocoanut-stearin, or cake which remains after 

 the oil has been removed from the dried ker- 

 nel, is used for fodder and manure, in much 

 the same manner as cottonseed-oil cake. When 

 dried in the sun or in a kiln, copra yields from 

 fifty to sixty-five per cent of oil. Dried by 

 hot air, however, often as high as seventy-four 

 per cent has been obtained. The copra of 

 thirty ordinary cocoanuts will yield a gallon 

 of oil. See COCOANUT. 



COPTS, kopts, a group of Egyptians who 

 are Christian descendants of the ancient in- 

 habitants of the country. They number about 

 700,000, and are found mainly in the towns of 

 Upper Egypt, mostly south of Assuan. Saint 

 Mark is honored as the evangelist who led 

 their forefathers into the light of Christianity. 

 The majority of the Copts are members of the 

 old National Church which broke away from 

 the Roman Church in A. D. 451, owing to differ- 

 ences in belief concerning the nature of Christ. 

 A few belong to the Greek and the Roman 

 Catholic churches. The Copts are of lighter 

 color than the Mohammedan peasants, and are 

 not so tall. Their distinctive dress consists of a 

 black coat and a black or blue turban, a garb 

 they were compelled to wear when suffering 

 from Mohammedan persecutions. The Copts 

 are skilful accountants, and many are gold- 

 smiths and money-lenders. They do not as a 

 rule become tillers of the soil. 



COPYRIGHT, the exclusive right which 

 authors and artists secure, by law, to publish 

 and sell their productions for a specified length 

 of time. Copyright legislation began in the 

 United States in 1790, and in 1909 a law went 

 into effect which amended and consolidated 

 all previous acts respecting copyright. This 

 law, as amended by Congress in 1912, provides 

 that the following works may be copyrighted: 



(a) Books, including composite and cyclopedic 

 works, directories, gazetteers and other compila- 

 tions. 



(b) Periodicals, including newspapers. 



(c) Lectures, sermons, addresses, prepared for 

 oral delivery. 



