. Cassier's magazine. ENTRY IN MERRIMAC MINE ous from Pennsylvania to WytheCounty. The character of the coal changesquite rapidly, and all developments aredependent upon the most thoroughprospecting. On the cross-section ofthe Pulaski seam, which is an extensionof the Brush Mountain field, the bandof dust, or minings, is very much greaterthan in the Brush Mountain , the marked similarity between other, indicates that the coal lies underthe Blacksburg valley, and that thesynclinal axis of the basin is coincidentwith that of the valley. This is unques-tionably incorrect; the true cond
. Cassier's magazine. ENTRY IN MERRIMAC MINE ous from Pennsylvania to WytheCounty. The character of the coal changesquite rapidly, and all developments aredependent upon the most thoroughprospecting. On the cross-section ofthe Pulaski seam, which is an extensionof the Brush Mountain field, the bandof dust, or minings, is very much greaterthan in the Brush Mountain , the marked similarity between other, indicates that the coal lies underthe Blacksburg valley, and that thesynclinal axis of the basin is coincidentwith that of the valley. This is unques-tionably incorrect; the true condition isthat shown on the cross section wherethe upheaval of the Trenton or under-lying limestone is indicated. The character of the coal in the veinvaries very much from top to the sections shown of the Brush VIRGINIA ANTHRACITE COAL 33*. THE FIRST ANTHRACITE COAL-BURNING LOCOMOTIVE IN THE AMERICAN SOUTHERN STATES FOR BURNING VIRGINIA ANTHRACITE. BUILT BY THE RICHMOND, VA., WORKS OF THE AMERICAN LOCOMOTIVE COMPANY Mountain field and of the Price Moun-tain field, the coal near the bottom israther soft and tender, but very low inash, running as low sometimes as 3 percent, and 4 per cent. As we go to-wards the top of the vein, the coal be-comes harder and higher in ash. Theslates are all rather dark in colour, andsome of them are so filled with bitu-minous matter as to make it practicallyimpossible to tell them from coal except by their weight and their flinty char-acter. Some of these bands of slate aremade up of small pieces which are cov-ered with a thin layer of coal, makingit impossible for the ordinary person torecognise them as slate. The gravity of slate is very muchgreater than coal, making automaticseparation very easy. The coal is verylight, the most marked difference be-tween it and the Pennsylvania coal be- K
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