392 Transactions of the South African Philosophical Society. 



Oldham, E. D. Essays on speculative geology, i. On homotaxis 

 and contemporaneity. 

 London, Geol. Mag., 3, 1886, 293-300. 



Olds, H. F. Notes on blue asbestos. 

 New York, Engin. Min. J., 67, 1899, 528. 

 Berlin, Zs.prakt. Geol., 1899, 268. 



Olds, F. The Witwatersrand gold-fields. 

 Newcastle, Trans. Inst. M. E., 18, 1899, 89. 



O'Neill, H. E. Eastern Africa, between the Zambesi and 

 Rovuma Rivers. 

 London, Proc. R. Geog. Soc, 7, 1885, 430-449, map. 



Orange Free State Government Reports. 



v. Stow, G. W. [Reports on the Geological Survey, 1878 — >.] 



O'Reilly, J. P. Relations antipodales des ties Hawaii avec la 

 geographie physique de l'Afrique du Sud. 

 Paris, C.-R. Ass. franc, avanc. sci., 22, Besancon 1893, 2 e partie, 869-871. 



Ortmann, A. E. . An examination of the arguments given by 

 Neumayr for the existence of climatic zones in Jurassic times. 

 New Haven, Amer. J. Sci., 1, 1896, 257-270. 



The geographical distribution of freshwater decapods and 



its bearing on ancient geography. 



Philadelphia, Proc. Amer. Phil. Soc, 41, 1902, 267-400. 



Osborn, H. F. The structure and classification of the Mesozoic 

 mammalia. 

 Philadelphia, J. Acad. Nat. Sci., 9, 1888, 186-265, pi. viii., ix. 



The origin of the teeth of the mammalia. 



New York, Science, 5, 1897, 576-577. 



The origin of the mammalia. 



London, Rep. Brit. Ass., 67, Toronto 1897, 686-687. 



Trituberculy. A review dedicated to the late Prof. 



Edward D. Cope. 



Boston, Amer. Nat., 31, 1897, 993-1016, 16 ffg. 



The origin of the mammalia. 



Boston, Amer. Nat., 32, 1898, 309-334, 14 ffg. 



[The origin of the mammalia. Abstract of a paper read 



before the New York Academy of Sciences, Jan. 10, 1898.] 

 New York, Science, 7, 1898, 176-178. 



