CONTENTS V 



Page 



Further evidence of an unconformity in the so-called Laramie of the 

 Raton coal field, New Mexico [abstract] ; by Willis Thomas Lee. . 717 



Repeating patterns in the relief and in the structure of the land [dis- 

 cussion] ; by William Herbert Hobbs 717 



Apparent sun-crack structure in diabase [abstract and discussion] ; by 

 Edgar T. Wherry 718 



Geology of part of Luna County, Ne^Y Mexico [abstract] ; by N. H. 

 Darton 718 



Pre-Cambrian of Sweden, with comments on American taxonomic 

 parallels [abstract and discussion] ; by James F. Kemp 719 



Chazy formation in the Ottawa Valley [abstract] ; by P. E. Raymond. 719 



Frankfort and Utica shales of the Mohawk Valley [abstract] ; by 

 Rudolf Ruedemann 720 



Stratigraphy of the Lower Pennsylvanian of northeastern Oklahoma 

 [abstract and discussion] ; by D. W. Ohern 720 



Sketch of the local geology, city of Pittsburgh [abstract and discus- 

 sion] ; by Percy • E. Raymond 721 



Cretaceous and Tertiary formations of western North Dakota and 

 eastern Montana [abstract] ; by A. G. Leonard 722 



Eocene and Oligocene of the Wind River and Big Horn basins [ab- 

 stract and discussion] ; by W. J. Sinclair and Walter Granger. . . 722 



Twenty-foot terrace and sea-cliff of the Lower Saint Lawrence [ab- 

 stract and discussion] ; by James Walter Goldthwait 723 



Pre-Glacial course of the upper Hudson River [discussion] ; by Wil- 

 liam J. Miller 724 



Mohawk glacial lobe [abstract and discussion] ; by A. P. Brigham... 725 



Lake Maumee, in Ohio [abstract and discussion] ; by Frank Carney. 726 



Study of ice-sheet erosion and deposition in the region of the Great 

 Lakes [abstract and discussion] ; by Frank Bursley Taylor 727 



lowan drift [abstract] ; by Samuel Calvin 729 



Pleistocene of the vicinity of Sioux Falls, South Dakota [abstract] ; 

 by B. Shimek 730 



Pleistocene of the vicinity of Omaha, Nebraska, and Council Bluffs, 

 Iowa [abstract] ; by B. Shimek 730 



Lessons of the Little Yosemite Valley [abstract] ; by F. E. Matthes. 730 



Two glaciers in Alaska [abstract and discussion] ; by L. Martin 731 



System of Quaternary lakes in the Mississippi basin [abstract and 

 discussion] ; by E. W. Shaw 732 



Radiation of glacial flow as a factor in drumlin formation [abstract 

 and discussion] ; by William C. Alden 733 



New method of calculating the date of the Glacial epoch [abstract] ; 

 by RuFUS M. Bagg, Jr 735 



Physiographic studies in the San Juan District of Colorado [abstract 

 and discussion] ; by Wallace W. Atwood 735 



Geographical descriptions in the folios of the Geologic Atlas of the 

 United States [abstract] ; by W. M. Davis 736 



Quantitative classification of meteorites [abstract] ; by Oliver C. Far- 

 RINGTON 736 



Moldavite question [abstract] ; by George P. Merrill 736 



Clinton sand as a source of oil in Ohio [abstract and discussion] ; by 

 J. A. Bownocker 736 



