Virginia, 1492-1892 a brief review of the discovery of the continent of North America, with a history of the executives of the colony and of the commonwealth of Virginia in two parts |
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| II. |
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 | CXVI. Virginia, 1492-1892 |  |
422
In Piedmont Virginia
Granitic building stones, marbles, sandstones, brick and fire-clays; epidotic
rocks and limestone, for improving the soil; magnetic, hematite and
other ores of iron; barytes, lead, manganese, etc.
| CXVI. Virginia, 1492-1892 | |