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 18
worked simul-taneously, marbles of pure white, clouded, dark veined, nght waterblue and dai-k bluish or greenish tints, the colors being dependentupon the amount and character of the impurities in the original sedi-ments. POSITIOX OF BEDS AXD EXPEXSE OF QUABRYIXG. The position of the beds has,… … 54 THE BUILDING AND DECOEATIVB STONES one bed after the other, as in the sand and limestone quarries of theupper Mississippi valk.y. The ^vork can be carried on comparativelycheaply, provided that there is not too much preliminaiT stripping(PlatelY Fio- 1). When, however, the beds stand at high…
Stone · Building stones
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