BIBLIOGRAPHY. 681 



ECONOMICAL GEOLOGY. 



Coal. 



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 and London: John Heywood. 1878. 

 [Nature, XIX., 336, 337.] 



Thomas ( J. W.). A Treatise on Coal, Mine- gases, and Ventilation. 

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Thorpe (J. W.). Coal : its History and Uses. By Professors Green, 

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Wiltshire (T.). The History of Coal. By the Rev. T. Wiltshire, M.A., 

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Gold. 



Streeter (Edwin W.). Gold. By Edwin W. Streeter, F.R.G.S. 

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[Nature, XVIII. , 115.] 



Slate. 



DavieS (D. C). A Treatise on Slate and Slate Quarrying: Scientific, 

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 Lockwood & Co. 1878. 

 [Nature, XVIII., 10.] 



GEOGRAPHY. 



GENERAL. 



Travelling. 



Kaltbninner (D.). Manuel du Voyageur. Par D. Kaltbrunner, Mem- 

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Systematic. 



BrOWIl (Robert). The Countries of the World. By Robert Brown, 

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[Nature, XVIII., 11.] 



Stanford (Edward). Stanford's Compendium of Geography and Travel, 

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 [Nature, XVIII. , 378-380.] 



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