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ANTHRACITE (Gr. avOpat, coal), a term applied to those varieties of coal which do not give off tarry or other hydrocarbon vapours when heated below their point of ignition; or, in other words, which bum with a smokeless and nearly non-luminous flame. Other ter ...

ANTHRACENE (from the Greek a»0pa£, coal), C,4H,0, a hydrocarbon obtained from the fraction of the coal-tar distillate boiling between 270° and 400° C. This high boiling fraction is allowed to stand for some days, when it partially solidifies. It is then separa

ANHYDRITE, a mineral, differing chemically from the more commonly occurring gypsum in containing no water of cryitallization, being anhydrous calcium sulphate, CaSO,. It crystallizes in the orthorhombic system, and has three directions of perfect cleavage para

ATACAMITE, a mineral found originally in the desert of Atacama, and named by D. de GaUizen in 1801. It is a cupric oxychloride, having the formula CuCl2.3Cu(OH)2, and crystallizing in the orthorhombic system. Its hardness is about 3 and its specific gravity 3-

... ry septa, and the calicle filled with vesicular endotheca. Genera — ANTHRACENE— ANTHRACITE Cyiliphyllum, Lonsdalc (Silurian and Devonian). GoniophyUum, M. Edw. ami M. (In this Silurian genus the calyx is provided with a movable operculum, consisting of lour pa ...

... in the neighbourhood. The coal of some of the beds is bituminous, and of others anthracite. Communications. — Except that the Great Northern railway line from Belfast to the south and west runs for a short distance close to the southern boundary of the county, ...

... It is about 900 ft. above sea-level; in the vicinity are extensive deposits of anthracite coal, the mining and breaking of which is the principal industry; silk throwing and weaving is another industry of the borough. At Archbald is a large glacial " pot hole ...

... ences penal servitude is limited to seven years. Setting fire to mines of coal, anthracite or other mineral fuel is visited with the full measure of penalty, and in the case of an attempt the penal servitude is limited to fourteen years. By the Dockyards, &c., ...

... tem. Productive coal beds are found in five principal fields. These are (i) the Anthracite field in eastern Pennsylvania, nearly 500 sq. m. in extent; (2) the Appalachian field, having an area of about 71,000 sq. m. (75 % being productive), and extending from ...