Ilichards's Compressed Air I2mo, $1 50 



Robinson's Principles of Mechanism 8vo, 3 00 



Smith's Press- working of Metals 8vo, 8 00 



The Lathe and Its Uses 8vo, 6 00 



Thurstou's Friction and Lost Work 8vo, 3 00 



' ' The Animal as a Machine 12mo, 1 00 



Warren's Machine Construction 2 vols., 8vo, 7 50 



Weisbach's Hydraulics and Hydraulic Motors. (Du Bois.)..8vo, 5 00 

 " Mechanics of Engineering. Vol. III., Part I., 



Sec. I. (Klein.) 8vo, 500 



Weisbach's Mechanics of Engineering Vol. III., Part I., 



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Weisbach's Steam Engines. (Du Bois.) < 8vo, 500 



Wood's Analytical Mechanics 8vo, 3 00 



" Elementary Mechanics 12mo, 125 



" " " Supplement and Key 125 



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Allen's Tables for Iron Analysis 8vo, 3 00 



Egleston's Gold and Mercury 8vo, 7 50 



" Metallurgy of Silver 8vo, 750 



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Kunhardt's Ore Dressing in Europe 8vo, 1 50 



Metcalf's Steel A Manual for Steel Users 12mo, 2 00 



O'Driscoll's Treatment of Gold Ores 8vo, 2 00 



Tiiurston's Iron and Steel 8vo, 3 50 



Alloys 8vo, 250 



Wilson's Cyanide Processes 12mo, 1 50 



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Barringer's Minerals of Commercial Value oblong morocco, 2 50 



Beard's Ventilation of Mines 12mo, 2 50 



Boyd's Resources of South Western Virginia 8vo, 3 00 



" Map of South Western Virginia Pocket-book form, 2 00 



Brush and Penfield's Determinative Mineralogy 8vo, 3 50 



Chester's Catalogue of Minerals 8vo, 1 25 



paper, 50 



" Dictionary of the Names of Minerals 8vo, 3 00 



Dana's American Localities of Minerals 8vo, 1 00 



13 



