The building and decorative stones of Maryland, containing an account of their properties and distribution (1898)
Merrill, George P. (George Perkins), 1854-1929, Mathews, Edward Bennett, b. 1869 · Baltimore, Johns Hopkins press · leaf 30
Iic.].—UUAHliY S1I()\\I\(; Sl:\Eli.\L SEIUKS Ol- .IIIIXTS. … Fii;. •J.-GLACIAL STHllMKU QCAUUY. MARYLAND GKOLOGICAL SfRVKV 03 That a stone is soft when first quarried ami hardens on exposure, isone of the commonest araiinients nsed hv qiiarriers with reference totheir material, though they fail to remember that such induration maybe temporary, and the rock…
Stone · Building stones
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