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Scientific American, Vol. 68, No. 1 (January 1893) (1893)
leaf 7
. amount of deterioration." This is found to be a clear, colorless silicious cement, changed its weight t&jts of one per cent. These two The other sandstones vary greatly from this. In so that the rock is virtually silica. On this point, tests are designed to represent the action upon it of many… … PARLIAMENT BUILDINGS, OTTAWA,* AND PBIVATE RESIDENCES BUILT OF POTSDAM BED SANDSTONE. © 1893 SCIENTIFIC AMERICAN, INC.Munn · Apparatus · Patents · Illustrated · Feet · Scientific American · Ostrich · Roman cement · Red stone · Horse power · Square feet · Hydraulic factors · Sewing machine · Square foot · Natural gas · Railway postal
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