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Scientific American, Vol. 68, No. 1 (January 1893) (1893)
leaf 8
e practically inexhaustible. We may, therefore, pro- all that we have said above. Dr. Newberry is professor nounce the company's quarries an almost ideal source scale on which the operations are there carried on. of geology in Columbia College School of Mines; the Prom the everyday point of view a… … THE MANUFACTURE OF TRUNK AND BOOKBINDER'S BOAR DS.-[See page 10.] © 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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