INDEX TO VOLUME XIX 769 



PAGE 



Preliminary Notes on Some Igneous Rocks of Japan. III. By S. Kozu 566 



Preliminary Notes on Some Igneous Rocks of Japan. IV. By S. Kozu 632 

 Preliminary Statement concerning a New System of Quaternary Lakes 



in the Mississippi Basin. By Eugene Wesley Shaw . . . 481 



"Production of Phosphate Rock in 1910, The." By F. B. Van Horn. 



Review by A. D. B. 758 



Proposed Classification of Petroleum and Natural Gas Fields Based on 



Structure, A. By Frederick G. Clapp. Review by E. R. L. . 383 

 Prospecting in the North. By Horace V. Winchell. Review by W. H. E. 190 

 Purdue, A. H. Recently Discovered Hot Springs in Arkansas . . 272 

 . The Slates of Arkansas, with a Bibliography of the Geology 



of Arkansas by J. C. Branner. Review by E. R. L. . . . 191 



Radioactivity on Geology, The Bearings of. By T. C. Chamberlin . 673 

 Rastall, R. H. The Skiddaw Granite and Its Metamorphism. Review 



by Albert Johannsen . . . . . . . .187 



Recent Publications ......... 669 



Recently Discovered Hot Springs in Arkansas. By A. H. Purdue 272 



Reconnaissance of the Book Cliffs Coal Field between Grand River, 



Colorado, and Sunnyside, Utah. By G. B. Richardson. Review 



by E. R. L. . 95 



Recurrence of Tropidoleptus carinatus in the Chemung Fauna of 



Virginia, The. By E. M. Kindle 346 



Reid, Harry Fielding. The Variations of Glaciers. XV. . . 83 



. The Variations of Glaciers. XVI. ..... 454 



Requisite Conditions for the Formation of Ice Ramparts. By William 



H. Hobbs 157 



Restoration of Seymouria Baylorensis Broili, an American Cotylosaur. 



By S. W. Williston 232 



Reviews ..... 90, 189, 276, 381, 469, 576, 661, 756 



Rich, John Lyon. Gravel as a Resistant Rock .... 492 



Richardson, G. B. Reconnaissance of the Book Cliffs Coal Field 



between Grand River, Colorado, and Sunnyside, Utah. Review by 



E.R.L ... 95 



Ries, Heinrich. Economic Theory with Special Reference to the 



United States. Review by W. H. E. . . . . . 90 



Ripples of the Bedford and Berea Formations of Central and Southern 



Ohio, with Notes on the Paleogeography of that Epoch, The. 



By Jesse E. Hyde ......... 257 



Roches sodiques du desert arabique, Les. By J. Couyat. Review by 



F. C. Calkins .......... 463 



Rogers, Austin F. On Corundum-Syenite (Uralose) from Montana . 748 

 Rosenbusch, H. Elemente der Gesteinslehre. Review by Edward B. 



Mathews .......... 284 



