CONTENTS V 



Page 



New points in Ordovician and Silurian paleogeographj- [ab- 

 stract] ; by T. E. Savage and Francis M. Van Tuyl 88 



Dating of peneplains: an old erosion surface in Idaho, Mon- 

 tana, and Washington — is it Eocene? [abstract and discus- 

 sion] ; by John L. Rich 89 



Iron formation on Belcher Islands, Hudson Bay, with special 

 reference to its origin and its associated algal limestones 



[abstract] ; by E. S. Moore 90 



Titles and abstracts of papers presented before the afternoon ses- 

 sion of Friday 90 



Subprovineial limitations of Precambrian nomenclature in the 

 Saint Lawrence Basin [abstract and discussion] ; by M. E. 

 Wilson 90 



Further studies in the New York Siluric [abstract] ; by 

 George H. Ciiadwick 92 



Relations of the oil-bearing to the oil-producing formations in 

 the Paleozoic of North America [abstract] ; by Amadeus W. 

 Grabau 92 



Revision of the Mississippian formations of the upper Missis- 

 sippi Valley [abstract] ; by Stuart Weller and Francis M. 

 Van Tuyl 93 



Notes on the stratigraphy and faunas of the Lower Kinder- 

 hookian in Missouri [abstract] ; by E. B. Branson 93 



Meganos group, a newly recognized division in the Eocene of 

 California [abstract] ; by Bruce L. Clark 94 



Age of the Martinsburg shale as interpreted from its struc- 

 tural and stratigraphical relations in eastern Pennsylvania 

 [abstract] ; by F. F. Hintze 94 



Invertebrate fauna of the Grassy Creek shale of Missouri [ab- 

 stract] ; by Darling K, Greger 95 



Some definite correlations of West Virginia coal beds in Mingo 

 County, West Virginia, with those of Letcher County, south- 

 eastern Kentucky [abstract] ; by I. C. White 96 



Records of three very deep wells drilled in the Appalachian oil 

 fields of Pennsylvania and West Virginia [abstract and dis- 

 cussion] ; by I. C. White 96 



Tentative correlation of the Pennsylvania strata in the east- 

 ern interior, western interior, and Appalachian regions by 

 their marine faunas [abstract] ; by T. E. Savage 97 



Precambrian rocks in the Medicine Bow. Mountains of Wyom- 

 ing [abstract] ; by Eliot Blackwelder and H. F. Crooks. . 97 



Geologic map of Brazil [abstract] ; by John Casper Branner. 98 



Notes on the geology of the region of Parker Snow Bay, 



Greenland [abstract] ; by Edmund Otis Hovey 98 



Annual dinner 98 



Session of Saturday, December 29 '. 98 



Titles and abstracts of papers read before the Saturday morning 

 session 99 



