IV CONTENTS OF VOLUME 11. 



NUMBER III. 



The Oil Shales of the Scottish Carboniferous System. Henry M. 



Cadell. 243 



The Cretaceous Rim of the Black Hills. Lester F. Ward. . . 250 



On Diplograptid^, Lapworth. Carl Wiman. 267 



Geological Surveys in Alabama. Eugene Allen Smith. . . . 275 



The Superficial Alteration of Ore Deposits. R. A. F. Penrose, Jr. 288 



Studies for Students : Erosion, Transportation and Sedimentation Per- - 



formed by the Atmosphere. J. A. Udden. . . . . . 318 



Editorials. 332 



Reviews : Geological Survey of Georgia, J. W. Spencer, by E. A. Smith ; 

 Annual Report of the Geological Survey of Arkansas for 1890. Vol. 

 IV., Marbles and other Limestones, T. C. Hopkins, by R. A. F. Pen- 

 rose, Jr 335-339 



Acknowledgments. 342 



NUMBER IV. 



The Norwegian Coast Plain. Hans Reusch. 347 



Glacial Canons. W. J. McGee. 350 



Fossil Plants as an aid to Geology. F. H. Knowlton. . . . 365 



Wave-like Progress of an Epeirogenic Uplift. Warren Upham. . 383 

 The Occurrence of Algonkian Rocks in Vermont and the Evidence 



FOR their Subdivision. Charles Livy Whittle 396 



Editorials. 430 



Reviews : The Lafayette Formation, W. J. McGee, by J. W. Spencer. Ele- 

 mentary Meteorology, William Morris Davis, by H. B. Kiimmel. . 435-440 

 Analytical Abstracts of Current Literature : Summary of Pre- 



Cambrian North American Literature. C. R. Van Hise. . . . 444 



NUMBER V. 



The Origin of the Oldest Fossils and the Discovery of the Bottom 



OF the Ocean. W. K. Brooks. ....... 455 



The Amazonian Upper Carboniferous Fauna. Orville A. Derby. . 480 



Geological Surveys of Ohio. Edward Orton. 502 



Studies for Students : Proposed Genetic Classification of Pleistocene 



Glacial Formations. T. C. Chamberlin. . . . . . . 517 



Editorials. 539 



Reviews : The Iron-Bearing Rocks of the Mesabi Range in Minnesota, J. 

 Edw^ard Spurr, by T. C. Hopkins; The Mineral Industry : Its Statistics, 

 Technology, and Trade in the United States and other Countries, etc. 

 T. C. Hopkins 545-54^ 



NUMBER VI. 



The Cenozoic Deposits of Texas. E. T. Dumble. .... 549 



Outline of Cenozoic History of a Portion of the Middle Atlantic 



Slope. N. H. Darton 568 



The Metamorphic Series of Shasta County, California. James Per- 



rin Smith. ............ 588 



Studies for Students : Superglacial Drift. Rollin D. Salisbury. . . 613 



Editorials. 633 



