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271. Note ou Nya anniiirkuingar oni Williamsonia af A. G. Nathorst. (Ofver- 



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272. Webster, Clement L. Notes ou the geology of Johnson County. Anier. Nat., 



vol. XXII, pp. 408-419. 1888. Philadelphia. 



273. Notes on the Rockford Shales. Amer. Nat., vol. xxii, pp. 444-44G. May, 



1888. Philadelphia. 



274. Description of new and imperfectly known species of Brachiopods from 



the Devonian rocks of Iowa. Amer. Nat., vol. xxii, pp. 1100-1104. 1888. 

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275. Description of new species of fossils from the Rockford shales of Iowa. 



Amer. Nat., vol. xxii, pp. 1013-1018. 1888. Philadelphia. 



276. A description of the Rockford shales of Iowa. Pioc. Dav. Acad. Nat. Sci., 



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277. Whitaker. W., and Dalton, W. H. The Geological Record for 1879, pp. i-xxxiv 



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278. White, C. A. On the age of the coal found in the region traversed by the Rio 



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279. Remarks on the revision of the Palaiocrinoidea of Wachsmiith and 



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280. On the inter-relation of contemporaneous fossil faunas and floras. Amer. 



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281. Review of Wachsmnth and Springer's "Summit plates iu Blastoids, Criu- 



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■282. On new generic forms of Cretaceons Mollusca, and their relation to other 



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283. On the Cretaceous formations of Texas, and their relation to those of 



other portions of North America. Proc. Acad. Nat. Sci. Philad. for 1887, pp. 

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284. Review of Charles D. Walcott's Second Contribution to the studies on the 



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285. Contributions to the Paheoutology of Brazil, comprising descriptions of 



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286. On the relation of the Laramie group to earlier and later formations. 



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2.^7. On the Paget group of Washington Territory. Amer. Jonrn. Sci., vol. 



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288. On the occurrence of later Cretac«ioiis deposits in Iowa. Amer. Geol., 



vol. I, i)p. 221-227. 1888. Minneapolis. 



289. In a note to the editors, Dr. White announces tiiat he has "found that 



M'-. Cuuimings was entirely correct in his n^torted discovery of Mesozoic 

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290. On Ifiudeatitrn'a, a now generic form of Cretaceous Astrauihe Geol. Mag., 



dec. Ill, vol. V, No. 8, pi). 362, 363. 1888. London. 



