VI BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



Divisions and correlations of tbe Dunkard scries of Ohio 

 [complete paper] ; by Clinton R. Stauffer 86 



Silurian system of Maryland [abstract and discussion] ; by 

 O. K. Swaktz and W. F. Prouty 89 



Homocline and monocline [complete paper and discussion] ; 

 by Reginald A. Daly 89 



Occurrence of intraformational conglomerate and breccia [ab- 

 stract] ; by F. V. Emekson 93 



Keweenaw fault [complete paper] ; by Alfred O. Lane 93 



Some structural features in the Green Mountain belt of rocks 

 [abstract] ; by 'C. E. Gordon 101 



Faulting in north-central Kentucky [complete paper and dis- 

 cussion] ; by Arthur M. Miller , 101 



Mechanics of intrusion of the Black Hills Precambrian gran- 

 ite [abstract and discussion] ; by Sidney Paige 101 



Precambrian structure of the Black Hills, South Dakota [ab- 

 stract] ; by Sidney Paige 106 



Titles and abstracts of papers presented before the afternoon ses- 

 sion and discussions thereon . . 106 



Rectilinear features in the eastern Catskills [abstract and 

 discussion] ; by George H. Chadwick 107 



Physiographic evidence of recent subsidence on the coast of 

 Maine [abstract] ; by Charles A. Davis 108 



Physiographic notes on the White Mountains [abstract] ; by 

 Douglas W. Johnson 108 



Position of the New England upland in the White Mountains 

 [abstract] ; by Armin K. Lobeck 108 



Study of ripple-marks [abstract] ; by Walter A. Bucher. . . . 109 



Dead Lake of the Chipola River, Florida [abstract] ; by E. H. 

 Sellards 109 



Tectonic lines in the Hawaiian Islands [abstract] ; by Sidney 

 Powers 109 



Banded glacial slates of Permocarboniferous age, showing- 

 possible seasonal variations in deposition [abstract and dis- 

 cussion] ; by Robert W. Sayles 110 



Geology of the Lake Iditarod region, Alaska [abstract] ; by 

 Philip S. Smith. 114 



Characteristics of the soil and its relation to geology [ab- 

 stract] ; by C. F. Marbut 114 



Geologic significance and genetic classification of arkose de- 

 posits [abstract] ; by Donald C. Barton 115 



Some features of the Kansan drift in southern Iowa [ab- 

 stract and discussion] ; by George F. Kay 115 



Triassic rocks of Alaska [abstract] ; by George C. Martin. . . 119 



Lithogenesis and stratigraphy of the red beds of southeast- 

 ern Wyoming [abstract] ; by S. H. Knight 120 



Experiment in the graphic presentation of the economic geol- 

 ogy of bedded deposits [abstract] ; by George H. Ashley. . 122 



