GENEKAL AND ECONOMIC GEOLOGY 233 



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 James Oeton : On the evidence of a glacial epoch at the equator. Proceedings 



of the American Association for the Advancement of Science, volume XIX, 



pages 185-193. Cambridge, 1871. Annals and Magazine of Natural His- 

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 James Orton : The Andes and the Amazon, or across the continent of South 



America. Third edition, 645 + xxiii pages. New York, 1876. 

 James Orton: (Quotations upon the drift of the Amazon Valley.) Annual of 



Scientific Discovery for 1871, pages 245-246. Boston, 1871. 

 Elis:^e Reclus: Nouvelle Geographic universelle. La terre ei les Hommes. 



Volume XIX, Amerique du Sud, I'Amazonie et la Plata. Paris, 1894. 



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 R. H. Schomburgk : Report of the third expedition into the interior of Guyana, 



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 R. H. Schomburgk: Journey from Esmeralda, on the Orinoco, to San Carlos 



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 Herbert H. Smith : Geology and physical geography of the Amazons Valley. 



Appendix to "Brazil, the Amazons and the coast," pages 619-635. New 



York, 1879. 

 Spix und Martius : Reise in Bresilien auf Befehl Sr. Majestat Maximilian 



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