[l(j2C.] 



82 



OMORI, F., 3. The Sakura-jima Eruptions and Earthquakes. V. Seismographical 



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pp. 353-466, figs., pis. lxxviii-lxxxvii. 1920. 

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 O'NEILL, J. J. Salmon River District, Portland Canal Mining Division, B.C. 



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■ 4. Die Tertiarbildungen von Deutsch-Ostafrika. Zeitsehr. deutsch. geol. 



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 OPPENHELMER, .J. Barahoplites bigoureti Seunes and Lytoceras sutile 



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ORDONEZ, E. Oil in Southern Tamaulipas, Mexico. Trans. Am. Inst. M. E. 



lxi. pp. 523-543, tigs. [geol. sketch-mapj. 1920. 

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 OSBON r , C. C. Peat in the Dismal Swamp, Virginia and North Carolina. Bull. 



U.S. Geol, Surv. No. 711, pp. 41-59, pis. iv-vi. 1919. 

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And A.C. 



2. Long-Jawed Mastodon Skeleton from South Dakota, and Phylo2;eny of the 



Proboscidea. [Abstract.] Bull, Geol. Soc. Am. xxix. pp. 133-137. 1917. 

 And A.C. 



3 Memorial of Samuel Wendell Williston. Bull. Geol, Soc. Am. xxx. 



pp. 66-76, pi. vi [portrait J. 1919. 

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[Introduction.] Bull. Am. Mus. Nat. Hist, xxxix. pp. xv-xxvii, topogr. 



map. 1919. And A.C. 

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pp. 557-569, figs. 1919. And A.C. 

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Nat. Acad. Sci., U.S.A. v. pp. 250-252. 1919. And A.C. 

 7. Balaomastodon, the Ancestor of the Long-Jawed Mastodons only. Froc. 



Nat. Acad. Sci., U.S.A. v. ppl 265-266, fig. 1919. And A.C. 



