92 GÉOLOGIE DE LA REPUBLIQUE SUD-AFRICAINE 21 JanV. 



43 . A.-R. Sawyer. ~ The goldfields of ÎMashonaland. 



44. Id. — The Portuguese Manica goldfîeld. Transactions of the Fed. 

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45. A. ScHENGK. — Geologische Skizze A^on Sûd-Africa. Peterniann's Geogr. 

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46. Id. — Ueber Glacial-erscheinungen in Siid-Afrika. Verhandl. des S'" 

 Deiitschen Geographent'ages zii Berlin, p. 14». Berlin, 1889. 



47. A.-C. Seward. — Note on plant-reinains from Vereeniging, Transvaal. 

 Quart. Journal of the geol. Society, LIV, p. 92. London, 1898. 



48. G.-W.Stow. — On some points ofSouth-African geology. Quart. Journal 

 ofthe geol. Society, Vol. XXVII, p. 28, 5o, 52, 497, 523 et 534. London, 1871. 



49. Id. — On the geology of Griqualand-West. Quart. Journal 0/ the 

 geol. Society, Vol. XXX, p. 58i. London, 1874. 



&0 . E. SuEss. — Das Antlitz der Erde I. Wien, i885. 



51. P.-C. SuTHERLAND. — On thc geology of Natal. Durban, i8fi8. 



52. Id. — Notes on an ancient boulderclay of Natal. Quart. Journal of 

 the geol. Society, Vol. XXVI, p. 5i4. London, 1870. 



53. E.-A. AVùLFiNG. — Untersuchung eines Nephelin-syenits ans dem 

 mittleren Transvaal in Siid-Afrika. Neues Jahrb. fur Minéralogie, etc., 1888, 

 II, p. 16. Stuttgart, 1888. 



64. R. Zeiller. — Etude sur quelques plantes fossiles, en particulier 

 Vertebraria et Glossopteris des environs de Johannesburg (Transvaal). B. 

 S. G. F., 3, tome XXVI, p. 349. Paris. 1896. 



