720 ABSTRACTS OF PAPERS 



Page 



Pre-Wisconsiii Glacial drift in the region of Glacier Park, Montana [dis- 

 cussion] ; by William C. Alden 730 



Some Glacial deposits east of Cody, Wyoming, and their relation to the 

 Pleistocene erosional history of the Rocky Mountain region [abstract 

 and discussion] ; by William J, Sinclair 731 



Evidence of three distinct Glacial epochs in the San Juan Mountains of 

 Colorado [abstract] ; by Wallace W. Atwood and Kirtley F. Mather 732 



Glacial investigations in Minnesota in 1911 [abstract and discussion] ; by 

 Frank Leverett 732 



Grooved and striated contact plane between the Nebraskan and Kansas 

 drifts [abstract] ; by J. Ernest Carman 735 



Nebraskan drift of the Little Sioux Valley in northwest Iowa [abstract 

 and discussion] ; by J. Ernest Carman 735 



On the pre-Glacial Miami and Kentucky Rivers [abstract] ; by N. M. 

 Fenneman 736 



Recent studies of the moraines of Ontario and western New York [dis- 

 cussion] ; by Frank B. Taylor 736 



Closing phase of glaciation in New York [abstract and discussion] ; by 

 H. L. Fairchild 737 



Loess a lithological term [abstract and discussion] ; by B. Shimelv 738 



Gros Ventre slide [abstract] ; by Eliot Blackwelder 730 



Cenozoic history of the Wind River Mountains, Wyoming [abstract] ; by 

 L. G. Westgate and E. B. Branson 739 



Stability of the Atlantic Coast [abstract and discussion] ; hj Douglas Wil- 

 son Johnson ' 739 



Some coastal marshes south of Cape Cod [abstract and discussion] ; by 

 Charles A. Davis 742 



Criteria for the recognition of ancient delta deposits [discussion] ; by 

 Joseph Barren 743 



Ancient delta deposits [abstract and discussion] ; by A. W. Grabau 743 



Mississippian delta in the northern New River district of Virginia [dis- 

 cussion] ; by E. B. Branson 743 



Structure of esker-fans experimentally studied [abstract] ; by T. A. 

 Jaggar, Jr 746 



Effect of rapid offshore deepening on lake shore deposits [abstract] ; by 

 Rufus M. Bagg, Jr 746 



Structure of the Helderberg front [abstract and discussion] ; by A. W. 

 Grabau 746 



Succession in ago of the volcanoes of Hawaii [abstract] ; by T. A. Jaggar, Jr. 747 



Bibliography of the Mammoth Cave [abstract] ; by Horace C. Hovey 747 



NEW EVIDENCE ON THE TACONIC QUESTION 



BY ARTHUR KEITH 



(AbStt'ttCt) 



The reasons were given for reopening the old controversy and for selecting 

 the north end of the Taconic Mountain as the crucial place. The principal 

 views regarding the rocks of the Taconic Mountains were briefly outlined! and 



