INDEX TO VOLUME XXVII 679 



PAGE 



Shan States and Yunnan, A Connecting Link between the Geology of 



the Northern. By M. H. Loveman 204 



Smith, James Perrin. Review of The Permo-Carboniferous Ammonids 



of the Glass Mountains, West Texas, and Their Stratigraphical 



Significance, by Emil Bose 132 



Smith, Warren Dupre, and Earl L. Packard. The Salient Features of 



the Geology of Oregon 79 



South Australia, The Geology of. By Walter Howchin. Review by 



R.T. C 391 



Springs, Classification of. By Kirk Bryan 522 



Stephenson, E. A., Albert Johannsen and. On the Accuracy of the 



Rosiwal Method for the Determination of the Minerals in a Rock 212 

 Stratigraphic and Structural Features of the Pre-Cambrian of Northern 



Quebec, Some. By H. C. Cooke 65, 180, 263, 367 



Submergence in the Columbia Valley of Oregon and Washington, The 



Late Pleistocene. By J Harlen Bretz 489 



Subordinate Ridges of Pennsylvania, Some. By Harry N. Eaton 121 



Suess, Ed. La Face de la terre. Traduit avec I'autorisation de I'auteur 



et annote sous la direction de Emmanuel de Margerie. Review by 



William Herbert Hobbs i33 



Thurman-Wilson Fault through Southwestern Iowa and Its Bearings, 



The. By John L. Tilton 3S3 



Thwaites, F. T., W. H. Twenhofel and. The Paleozoic Section of the 



Tomah and Sparta Quadrangles 614 



Tilton, John L. The Thurman-Wilson Fault through Southwestern 



Iowa and Its Bearings 3S3 



Tomah and Sparta Quadrangles, Wisconsin, The Paleozoic Section of 



the. By W. H. Twenhofel and F. T. Thwaites . 614 



Twenhofel, W. H., and F. T. Thwaites. The Paleozoic Section of the 



Tomah and Sparta Quadrangles, Wisconsin 614 



Tyrrell, J. B. Was There a " Cordilleran Glacier " in British Columbia ? 55 



United States Bureau of Internal Revenue of the Treasury Department, 

 19 1 9. Manual for the Oil and Gas Industry under the Revenue 

 Act of 1918. Review . 221 



Wentworth, C. K. A Laboratory and Field Study of Cobble Abrasion. 



Preliminary Report 507 



West Point Salt Dome, Freestone County, Texas, The. By E. 



DeGolyer 647 



Willis, Bailey. Editorial: Joseph Barrell and His Work . . . 664 



