118 



Jahrg. Bei. Seite 



Werveke, Leop. van : Eigentümliche Zwillingsbildung an 



Feldspath und Dialläg. (Mit Tafel V.) A. . . 1883 II 97 



— Rutil in Diabascontaetprodueten. — - Durch Diabas verän- 



derte Schiefer im Gebiet der Saar und Mosel. B. . 

 Wetherby, A. G.: Description of new fossils from the 

 lower Silurian and Subcarboniferous rocks of Ohio 

 and Kentucky. R 



— On the Geographica! Distribution of certain Fresh-Water 



Mollusks of North Amerika and the probable causes 

 of their Yariations. R 



— Certain Fresh-Water Mollusks of Noth America and the 



probable Causes of their Yariations. R 



Wheeler, Geo. ML: Annual Report upon the Geographical 



Surveys of the Territory of the lOOth Meridian. R. 

 Whitaker: The geological Record for 1877. R. ... 



— and Dalton: The geological Record for 1878. R. . . 

 White, C. A. : Progress of invertebrate paleontologv in 



the United States for 1880. R, . . 1881 II 406. 



— On the Antiquity of certain subordinate Types of Fresh- 



water and Land Mollusca. R 



— On certains conditions attending the Geological Descent 



of some North American types of Freshwater gillbea- 

 ring Mollusks. R 



— Contributions to Paleontology. 1—8. R. 1883 I 290. 



— Late Observations concerning the Molluscan Fauna and 



the Geographical extent of the Laramie Group. R. . 



— New Molluscan Forms from the Laramie and Green 



River Groups, with discussion of some associated forms 

 heretofore known. R 



— The molluscan fauna of the Truckee Group, including a 



new form. R 



On certain cretaeeous fossils from Arkansas and Colo- 

 rado. R. + 



— A review of the non-marine fossil Mollusca of North 



America. R. 



— , siehe: Fontaine and White. R 



— and Samuel Aughey: Artesian Wells upon the Great 



Piain, being the report of a Geological Commission 

 appointed to examine a Portion of the great plains 

 east of the Rocky Mountains, and Report upon the 

 Localities deemed most favorable for making experi- 



mental Borings. R 



Whiteaves, J. F.: Mesozoic Fossils. Yol. I. Part. I. On 

 some invertebrates from the coal-bearing rocks of the 

 Queen Charlotte Island. Part. II. On the fossils of 

 the Cretaeeous Rocks of Yancouver and adjacent Is- 

 lands in the Strait of Georgia. R 



— • On a new species of Pterichthys, allied to Bothriolepis 

 ornata Eichwald, from the Devonian rocks of the 

 North side of the Baie des Chaleurs. R 



— On some remarkable fossil Fishes from the devonian 



rocks of Scaumenac Bay, in the Province of Quebec. R. 



— On the occurrence of Siphonotreta Scotica Dav. in the 



Utica formation near Ottowa, Ontario. R 



— Palaeozoic fossils (of Canada). Yol. III. part I. R. 



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