[i8 99 .] 



76 



OLIPHANT, F. H. 2. Natural Gas. [U.S.A., &c] Ann. Rep. U.S. Geol. Surv. 



xviii. pp. 895-918. 1897. 

 ■ 3. Mineral Resources of the United States, 1897. Petroleum. Ibid. xix. 



pt. vi [no. 2] pp. 1-166. 1898. 

 4. . Natural Gas. Ibid. pp. 167-185. 1898. 



OMORI, F. Horizontal Pendulums for the Mechanical Registration of Seismic and 

 other Earth-Movements. Journ. Coll. Sci. Tokyo, xi. pp. 121-145, pis. ii-xii. 

 1899. 



2. Note on the Preliminary Tremor of Earthquake-Motion. Ibid. pp. 147-159, 



pis. xiii-xvi. 1899. 



OPPENHEIM, P. Ueber mitteleocane Faunen in der Herzegowina und ihre 

 Beziehungen zu den Schichten von Haskowo in Bulgarien und anderen alt- 

 tertiaren Faunen des ostlichen Mittelmeerbeckens. J¥. J. f. Min. 1899, ii. 

 pp. 105-115. 1899. 



2. I supposti Rapporti dei Crostacei Terziarii di Ofen descritti da E. Lobeht- 



het con quelli Veneti. Riv. ital. Paleont. Bologna, v. pp. 55-62. 1899. 



3. Sul Pecten aduncus, Eichwald, nel Neogene di Toscana. Ibid. pp. 85- 



86. 1899. 



4. Ueber Bambertina Gardinalei, n. g., n. sp. Zeitschr. deutsch. geol. 



Gesellsch. li., Protok. pp. 28-32, figs. 1899. 



■ 5. Ueber Orcagnia trivigiana n. g., n. sp. Ibid. pp. 32-34, figs. 1899. 



■ 6. Ueber Kreide und Eocan bei Pinguente in Istrien. Ibid. pp. 45-46. 



1899. 



7. Ueber Miocan (Helvetien) in der unmittelbaren Umgebung Veronas. 



Ibid. pp. 168-174. 1899. 

 - - 8. Palaontologische Miscellaneen. II. Ueber ' Trochocyathus sinuosus, 



Brongniart ' und verwandte Formen. [Ileliastrcea, Pattalophyllia, Grumia, 



Astrangia, Ubaghsia, Canavaria.~] Ibid. pp. 207-242, figs., pis. xi-xiii. 



1899. 



9. Zur Fauna des Septarienthons. Ibid. pp. 315-321. 1899. 



ORDONEZ, E. Las Rocas del Mineral de San Jose de Gi ■acia, Distrito de Sinaloa. 

 Mem. y Rev. Soc. cient. Ant. Alzate, x. pp. 89-93. 1897. 



2. Les Gisements d'Or du Mexique. Ibid. xi. pp. 216-240. 1898. 



■ . See Agtjilera, J. G. 



O'REILLY, J. P. On the Occurrence of Anatase (Xanthitane ?) and Brookite in 

 the Quartzites of Shankill. Sci. Proc. Roy. Dublin Soc. n. s. viii. pp. 732- 

 740, pi. xxv. 1898. 



■ 2. On the Dates of Volcanic Eruptions and their Concordance with the Sun- 



Spot Period. Proc. Roy. Irish Acad. ser. 3, v. pp. 392-432. 1899. 

 ORMEROD, H. M. See Obit., Whitaker, W. 



ORTMANN, A. E. The Fauna of the Magellanian Beds of Punta Arenas, Chili. 



Am. Journ. Sci. ser. 4, viii. pp. 427-432. 1899. 

 ORTON, E. Geological Probabilities as to Petroleum. Bull. Geol. Soc. Am. ix. 



pp. 85-100. 1898. 



2. The Rock- Waters of Ohio. Ann. Rep. U.S. Geol. Surv. 1897-98, xix. 



pt. iv. pp. 633-717, pis. lxxi-ixxiii. 1899. 

 OSBORN, H. F. A complete Skeleton of Teleoceras fossiger. Notes upon the 



Growth and Sexual Characters of this Species. Bull. Am. Mus. Nat. Hist. 



N.T. x. pp. 51-60, pis. iv & iv a. 1898. 

 2. A complete Skeleton of Coryphodon radians. Notes upon the Locomotion 



of this Animal. Ibid. pp. 81-91, pi. x. 1898. 

 ■ 3. Remounted Skeleton of Phenacodus primcevus. Comparison with Eu- 



protogonia. Ibid. pp. 159-164, figs., pi. xii. 1898. 

 4. Evolution of the Amblypoda. Part I. Taligrada and Pantodonta. Ibid. 



pp. 169-218, figs. 1898. 

 5. Additional Characters of the Great Herbivorous Dinosaur Camarasaurus. 



Ibid. pp. 219-233, figs. 1898. 



6. The Origin of Mammals. Am. Journ. Sci. ser. 4, vii. pp. 92-96. 1899. 



7. Fossil Vertebrates in the American Museum of Natural History. Nature, 



xlix. pp. 272-275, figs. 1899. 

 OSTREICH, K. Ein alpines Langsthal zur Tertiarz e it. Jahrb. k.-Jc. geol. 



Reichsanst. xlix. pp. 165-212, figs., pi. vi. [Map, ^^.] 1899. 

 <!)STRUP, E. See Hartz, N. 

 OUDIN, A. S. See Waagen, W. 



OWEN, L. A. La Caverne de Crystal. [S.Dakota.] Spelunca, iv. pp. 77-81, figs. 

 1898. 



