VI BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



Some structural features of the plains area of Alberta caused 

 by Pleistocene glaciation ; by Oliver B. Hopkixs . . ; 82 



Correspondence between the Gondwana system of Hindustan 

 and the Newark system of the eastern United States [ab- 

 stract and discussion] ; by William H. Hobbs 82 



Quantitative criteria in paleogeography [abstract and discus- 

 sion] ; by Raymond C. Moore 85 



Keweenaw geothermal gradients and the ice age [abstract] ; 



by Alfred C. Lane 86 



Votes of thanks 87 



Titles and abstracts of papers of Group A and discussions thereon 87 



Physical history of the Colorado Front Range [abstract] ; by 

 F. M. Van Tuyl and G. W. Machamer 87 



Structural features of the Colorado Plateau and their origin ; 

 by Raymond C. Moore 88 



Structure of the Spring Mountain Range, southern Nevada 

 [abstract] ; by D. F. Hewett 89 



Pleistocene of northwestern Illinois : a graphic presentation 

 of some of the chief lines of evidence [abstract] : by Mor- 

 ris M. Leighton 90 



Fossiliferous loess' beneath tilted Galena dolomite at the bor- 

 der of the Belvidere lobe, in northwestern Illinois [ab- 

 stract] ; by Morris M. Leighton 90 



Late Tertiary and Pleistocene terrace plains of the middle 

 Atlantic Coastal Plain [abstract] ; by Chester K. Went- 

 WORTH 91 



Glacial deposits of Missouri and adjacent districts [ab- 

 stract] ; l)y Frank Leverett 91 



Glacial drainage on the Columbia Plateau of Washington; by 

 J. Harlen Bretz 92 



Glacial lake problems [abstract] ; by George H. Chadwick . . 92 



Ice action on inland lakes [abstract] ; by Irving D. Scott. . . 92 



Banded postglacial clay near New York City [abstract] ; by 

 Chester A. Reeds 92 



Origin and history of extinct Lake Calvin, Iowa [abstract] ; 

 by Walter H. Schoewe 93 



Physiography of the I*aria River valley, southern Ttah [ab- 

 stract] ; by Raymond C. Moore 94 



Sand rivers of Texas and California and some of their ac- 

 companying phenomena [abstract] ; by Robert T. Hill. ... 95 



Sedimentation at the mouths of the Mississippi River — pre- 

 liminary report [abstract]: by Arthur C. Trowbridge.... 95 



(Geological map of the Bushveld complex, Transvaal, South 



Africa [abstract] ; by Charles Palache 95 



Titles and abstracts of papers of Group C and discussions thereon 96 



Metamorphism of quartzites by the Bushveld igneous com- 

 plex [abstract] ; by Fred. E. Wright 96 



Fusion of sedimentary rocks in drill-holes [abstract] ; by 

 Bailey Willis 96 



