[i8 9 S.] 



70 



OCHSENIUS, C. 4. Methan, Bitumen, Asphalt, Anthracit, Graphit, Diamant. 



Zeitschr. f. praJct. Geol. 1898, pp. 153-158. 1898. 



5. Zur Theorie der Wustenbildung. Ibid. p. 166. 1898. 



■ 6. Ganz junge Bildung von Schwefelkies. N. J. f. Min. 1898, ii. p. 232. 



1898. 



(EHLERT, D. P., & A. Bigot. Note sur le Massif silurien d'Hesloup. Bull. Soc. 

 geol. France, ser. 3, xxvi. pp. 82-103, fig. [Map, — L .] 1898. And A.C. 



OFFICER, G., & E. G. Hogg. The Geology of Coimaidai. Part II. The Silurian 

 and Glacial Beds. With Appendices by C. W. De Vis and T. S. Hall on the 

 Marsupial Bones of the Coimaidai Limestone and the Graptolites of the District 

 respectively. Proc. Boy. Soc. Victoria (Austr.), n. s. x. pp. 180-203, pis. viii & 

 ix. [Map, 1 inch=60 chains.] 1898. 



OGILVIE, A. G. See Obit., Hicks, H. 



OGILVIE, M. M. [Mrs. Gordon]. Microscopic and Systematic Study of Madre- 

 porarian Types of Corals. Phil. Trans. Boy. Soc. B, clxxxvii. pp. 83-345, figs. 

 1897. 



OGILVIE, W. The Geography and Resources of the Yukon Basin. Geogr. Journ. 



xii. pp. 21-40, figs. & 1 map. 1898. 

 2. The Yukon District. Scot. Geogr. Mag. xiv. pp. 337-346, figs., 1 map. 



1898. 



OLAVARRIA, M. de. Huevos f6siles encontrados en Cevico de la Torre (Pro- 

 vincia de Palencia). Pol. Com. Mapa geol. JEspana, xxiii. pp. 133-138, pi. v. 

 1898. 



OLRY, A. Coal Find and Mining Operations between Boulogne and Calais. Coll. 



Guard, lxxvi. p. 18. 1898. 

 OMBONI, G. II Gabinetto di Geologia della Reale Universita di Padova. Pp. 1-52, 



8vo. Padua, 1898. A.C. 

 , &c. Relazione intorno al Lavoro presentato per il Concorso della Fondazione 



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A.C. 



OPPENHEIM, P. Zur Altersfrage der Braunkohlen-Formation am Niederrhein. 



Zeitschr. deutsch. geol. Gesellsch. xlix. pp. 920-924. 1897. 

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derms.] Ibid. 1. pp. 147-167, pis. ii & iii. 1898. 

 OPPLIGER, F. Die Juraspongien von Baden. Abh. schw. palaont. Gesell. xxiv. 



no. 3, pp. 1-58, pis. i-xi. 1898. 

 O'REILLY, J. P. On the Constitution of the Calp' Shale of the Neighbourhood of 



Dublin. Proc. Boy. Irish Acad. ser. 3, iv. pp. 563-569, pi. xi. 1897. 

 ORDONEZ, E. Les Filous argentiferes de Pachuca (Mexique). Bull. Soc. geol. 



France, ser. 3, xxvi. pp. 244-258. 1898. 

 ORTMANN, A. E. Preliminary Report on some new Marine Tertiary Horizons 



discovered by Mr. J. B. Hatcher near Punta Arenas, Magellanes, Chile. Am. 



Journ. Sci. ser. 4, pp. 478-482. 1898. 

 OSANN, A., & C. Hlawatsch. Ueber emige Gesteine aus der Gegend von Predazzo. 



Min. petr. Mitth.n. s. xvii. pp. 556-567, figs. 1898. 

 OSASCO, E. Di alcuni Corallan oligocenici del Piemonte e della Liguria. Atti B. 



Acc. Sci. Torino, xxxiii. pp. 138-148, 1 pi. 1898. 

 OSBOKN, H. F. The Huerfano Lake Basin, Southern Colorado, and its Wind 



River and Bridger Fauna. Bull. Am. Mus. Nat. Hist. N. Y. ix. pp. 247-258. 



1897. 



2. The Extinct Rhinoceroses. Mem. Am. Mus. Nat. Hist. N. T. i. pp. 73-164, 



figs., pis. xii <x-xx. 1898. 

 3. Reconstruction and Model of Phenacodus prim&vus, Cope. Bep. Brit. 



Assoc. 1897, p. 684. 1898. 

 4. On Skeletons and Restorations of Tertiary Mammalia. Ibid. p. 684. 



1898. 



5. The Origin of the Mammalia. Ibid. pp. 686-687. 1898. 



OSSUNA, M. de. El Problema de la Atlantida y Geologia de la Region de Anaga 



(Islas Canarias). Bol. Inst, geogr. Argent, xviii. pp. 522-528. 1897. 

 OSTLAND, A. Report on the 'Pilbarra Goldfield. Bep. Bep. Mines W. Austr. 



1896, pp. 59-60. 1897. 

 OWEN, W. L. Report on the North Coolgardie Goldfield. Bep. Hep. Mines W. 



Austr. 1896, p. 61. 1897. 

 OYEN, P. A. Bidrag til Jotunfjeldenes Glacialgeologi. Nyt Mag. Naturvid. 



xxxvi. pp. 13-65, figs. 1897. 

 2. Rondesparagmiten. Ibid. pp. 249-262. 1898. 



PAALZOW, R. Eine neue Bryozoe aus dem ZechsteinrifF von Poessneck Abh. 

 naturh. Gesellsch. Niimberg, xi. pp. 46-47, pi. xiii. 1898. [See Spandel, E.] 



