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Gray, James. The Earth's Antiquity in Harmony with the Mosaic 

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Helmersen, G. von. Herm von MiddendoriFs Geognostische Beo- 

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Lubbock, Sir J. W. On the Theory of the Moon and on the Per- 

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Morton, S. G., M.D. Additional Observations on a new living 

 species of Hippopotamus, of Western Africa. 



Pareto, Marchese L. Osservazioni Geologiche dal Monte Amiata a 

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. Discorsi del, Presidente della Sezione^di Geologia e Mi- 



neralogia all' ottavo Congresso Scientifico Italiano letti alle Adu- 

 nanze dei Giorni 15 e 28 Sep. 1846. Frotn'Sir R. I. Murchi- 

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Pilla, L. Osservazioni Geognostiche da Napoli a Vienna. From Sir 

 R. I. Murchison, F.P.G.S. 



Reeve, Lovell. Conchologia Iconica. Monograph of the Genus 

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St. John, John R. A true description of the Lake Superior Country. 

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Taylor, W^alton mid Maberley. Two descriptive Catalogues of 

 Works pubhshed by, 1850. 



Thurmann, Jules. Essai de Phytostatique applique a la Chaine du 

 Jura, &c. Tome i. & ii. 



Yandell, L. P., M.D., and B. F. Shumard, M.D. Contributions to 

 the Geology of Kentucky. From Br. G. A. Mantell, F.G.S. 



