. . MARBLES. tlFORD, CHlCASa Old Tennessee. Sienna. Florentine Veiin<)nt. Alps Marble. ORES, MARBLES, ETC. • 31 if any, below the surface of the ground. Where opened inthe valley bottoms they have the form of huge rectangularpits with perpendicular walls. In Tennessee many of thesediments were so slightly changed that the fossil remainsare still easily recognized, and the stone is of a pink orchocolate red color, owing to the abundance of iron. The marbles are quarried mainly by channeling ma-chines, wh
. . MARBLES. tlFORD, CHlCASa Old Tennessee. Sienna. Florentine Veiin<)nt. Alps Marble. ORES, MARBLES, ETC. • 31 if any, below the surface of the ground. Where opened inthe valley bottoms they have the form of huge rectangularpits with perpendicular walls. In Tennessee many of thesediments were so slightly changed that the fossil remainsare still easily recognized, and the stone is of a pink orchocolate red color, owing to the abundance of iron. The marbles are quarried mainly by channeling ma-chines, which cut out the stone in blocks of any desired size,or at least in sizes such as the nature of the beds will is never resorted to in a properly managed quarry,since the shock of the explosion is likely to develop flawsin so tender a material. When freed from the quarry bedand brought to the surface the stone is sawn into the desiredshapes by means of reciprocating blades of soft iron, thecutting material being sand washed under the blades bysm
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnaturalhistory, booky
