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Copper ore in South-West Africa. 



Johannesburg, Trans. Geol. Soc. S. A., 7, 1904, 70-76, pi. xix., xx. 

 Berlin, Zs. prakt. Geol., 1904, 199-202, ffg. 28-33. 



Kunz, G. F. Gems and precious stones of North America. . . . 

 New York, 2 ed., 1892, 4to, pp. 357, illustr., 8 pi. 



Precious stones. [Genesis of the diamond, with reference to 



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Washington, Ann. Rep. U. S. Geol. Surv., 18, 5 (cont.), (1896-7), 1182-1217. 



The genesis of the diamond [Reference to H. Carvill Lewis's 



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New York, Science, 6, 1897, 450-456. 



The production of precious stones in 1903. 



Washington, Geol. Surv., Mineral Res. U. S., 1903. 



1904, 8vo, 71 pp. [Reprint.] 



Kurtz, F. Contribuciones a la palseophytologia argentina. i. 

 Botkrychiopsis. 

 La Plata, Rev. Mus., 6, 1, 1894, 119-124, pi. 



Contribuciones a la palseophytologia argentina. ii. Sobre 



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La Plata, Rev. Mus., 6, 1, 1894, 125-139, 4 pi. 



London, Nature, 52, 1895, 523. 



Calcutta, Rec. Geol. Surv. Ind„ 28, 1895, 111-117. 



Stuttgart, N. Jahrb., 1902, 1, 497-499. 



Kemarks upon Mr. E. A. Newell Arber's communication : 



On the Clarke Collection of fossil plants from New South "Wales. 

 London, Q. J. Geol. Soc, 59, 1903, 25-26. 



Kuss, H. Notes sur la geographie de quelques regions voisines 

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 Paris, Bui. Soc. geogr., 1882, 365-382. 



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Paris, Bui. Soc. geol., 12, 1883-84, 303-317, pi. x. 



Lisboa, Bol. Soc. geogr., (6), 1886, 178-179. 



Kynaston, H. Report on the area lying to north-east of 

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