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Ch. 6:Other Gems

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MARBLE.
383
American Marble. (Additional from the former edition of this treatise.)
The varieties of marble, which substance is inexhaustible in the United States, are very numerous; and I am proud to assert,'that for architectural and ornamental purposes, they will successfully compete with those of any foreign country. The colors are various, from the snow-white to the black with gold and grass-green veins. A small dis­trict in New England, of about fifty miles in extent, con­centrates, I may say, the marbles which may be collected in Europe through a space of two thousand square miles; for we find in the county of Berkshire, and that of New Haven, the representatives of marbles from Italy and Ire­land ; and the discoveries which are constantly being made of additional marble localities are a source of great satis­faction. Thirty years ago, the City Hall, of New York city, was built of marble from "West Stockbridge, Massa­chusetts, which was transported at great expense, a dis­tance of over four hundred miles; whereas, afterwards, the same quality of marble was discovered on New York island, but a few miles distant. According to Professor Dewey, the county of Berkshire alone turned out forty thousand dollars' worth of marble several years ago. I will here enumerate a few of the most interesting marbles:
a.  The Philadelphia marble, which is snow or grayish white, and sometimes variegated with blue veins, which takes a very high polish.
b.  The Potomac marble, which is properly called a breccia, being composed of rounded and angular frag­ments from the size of a pea to that of an ostrich's egg. Its colors are red, white, gray, and blackish-brown, inter­mixed ; it takes a very fine polish, and forms a most beau­tiful ornamental stone. It comes from the banks of the
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