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raggRAGG, n. Rowley ragg, a species of silicious stone, of a dusky or dark gray color, with shining crystals, of a granular texture, and by exposure to the air acquiring an ochery crust. |
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raggRAGG, n. Rowley ragg, a species of silicious stone, of a dusky or dark gray color, with shining crystals, of a granular texture, and by exposure to the air acquiring an ochery crust. |