A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . E 70 150 300 500 1400 Stuff consisting of slimes and sand may be readily elevated by means of a Jacobs lad-der or the Archimedean screw. For short elevations combined water and raff wheels devis-ed by Mr. Charles Remfry of Stolberg, Prussia, may be advantageously employed. Fig. 645, a, water-wheel; b, raff or inverted wheel; c, axis of both raff and water- 645. ^pl^^^^^^^^^^l,

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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864