1900 GEOLOGIE DE LA REPUBLIQUE SUD-AFRICATNE 9I 



21. G.-L. Griesbagh. — On the geology of Natal. Quart. Journ. of the 

 geol. Society, Vol. XXVII, p. 53. London, 1871. 



22. F.-H. Hatch. — A geological map ofthe Southern Transvaal. London, 

 1897. 



23 . Id. — A geological survey of the Witwatersrand and other districts 

 in the Southern Transvaal. Quart. Journ. of the geol. Society, Vol. LIV, 

 p. 73. London, 1898. 



24. J.-A.-L. Henderson. — On certain Transvaal Norites, Gabbros and 

 Pyroxenites and other South African rocks. London, 1898. 



25. A. HûBNER. — Geognostische Skizzen von den Siid-Afrikanischen 

 Diamanten-Distrikten. Peterinann's Geogr. Mittheilungen. XVII. p. 81, 1871 . 



26. Id. — Geognostische Skizzen aus Siid-Afrika. Peterinann's Geogr. 

 Mittheilungen, XVHI, p. 422. Gotha, 1872. 



27. M.-L. DE Launay. — Les mines d'or du Transvaal. Annale.^ de.<t Minea. 

 9, IX, p. I. Paris, 1896. 



28. K. Mauch. — Reisen in Siid-Afrika. Petermann's Geogr. Mittheilun- 

 gen. Ergànzungsheft, 37. Gotha, 1874. 



29. G.-A.-F. MoLENGRAAFF. — LTcbcr einige Erz-und Mineralvorkommen 

 in der Siidafrikanischen Republik Transvaal. Zeitschr. fiir Krystallogrn- 

 phie, XXn, p. 100, 1893. 



30. Id — Beitrag zur Géologie der Umgegend der Goldfelder auf dem 

 Hoogeveld in der Siidafrikanischen Republik. IVeues Jnhrbuch fiir Minéra- 

 logie, etc. Beilageband IX, p. 174. Stuttgart, 1894. 



31. Id. — Diamonds at Rietfontein. Transaction.^ of the geological 

 Society of South Africa, Yo\. Ht, p. 122. Johannesburg, 1898. 



32. Id. — Annual Report of the State Geologist of the South African 

 Republic for the year 1897. Transactions ofthe geological Society of South 

 Africa, Vol. IV, p. 119, Johannesburg, 1898. (Tradxiit du rapport officiel en 

 hollandais. Groenboek, N° ifi. Pretoria, 1898). 



33. Id. — The glacial origin ofthe Dwyka Conglonierate. Transactions 

 ofthe Geological Society of South A/rtca, Vol. IV, p. io3. Johannesburg, 1898. 



34. Id. — Geologische Aufnahme der Sûd-Afrikanischen Republik. 

 Jahresbericht ûher das Jahr i8g8, Pretoria, 191X). (Traduit du rapport 

 ofliciel en hollandais. Groenboek, N° 16. Pretoria, 1899). 



35. Id. — Die Reihenfolge und Corrélation der geologischen Forinationen 

 in Siid-Afrika. Neues Jahrb. fur Minéralogie, etc., 1900, 1, p. ii3. Stuttgart, 1900. 



36. M.-A. MouLLE. — Mémoire sur la géologie générale et sur les mines 

 de diamants de l'Afrique du Sud. Annales des Mines. Série VII. Année i88.">, 

 p. 192. Paris, 1880. 



37. H. Oemighen. — Goldhaltige Kobaltgànge in Transvaal. Zeitschr. fiir 

 praktische Géologie. Bd. VII, p. 271. Berlin, 1899. 



38. R.-D. Oldham. — A manual of the geology of ludia, Calcutta, 1893. 



39. W.-H. Penxing. — A sketch ofthe high level coal-fields of South- Africa. 

 Quart. Journal of the geological Society. Vol. XL, p. 65o. London, 1884. 



40. Id. — A sketch of the gold-lields of Lydenburg and de Kaap in the 

 Transvaal. Quart. Journal of the geological Society, Vol. XLI, p. 569, 1880. 



41 Id. a contribution to the geology of the Southern Transvaal. Quart. 

 Journ. ofthe Geological Society, Vol. XLVII, p. ^ôtî, 1891. 



42. A.-R. Sawyer. — The South Rand Coaltield and its connexion with 

 the "Witwatersrand Banket-Formation. Trans. of the Feder. Institution of 

 Mining Engineers, Vol. XIV, Newcastle upon Tyne, 1898. 



