IV BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Page 



Ruin-drtip impressions and marlcs of somewhat similar ap- 

 pearance I title and discussion]; by W. H. Twemiofef 27 



Structural features of Indiana [abstract and discussion] ; by 

 Stephen Visher 27 



Tutuila, Samoa, and tlie coral reef i)roblem |al)stract] ; by 

 RoLLiN T. Chamheulin 28 



Some geologic features of the Beartooth Mountains, Montana 

 [abstract] ; by Arthur Bevan 20 



Evolution of arcuate mountains [abstract and discussion] ; 

 by W. H. HoBBS 30 



Some points in the mechanics of arcuate and lobate moun- 

 tain structures [abstract] ; by F. B. Taylor 31 



Doctrine of the zone of flow challenged [abstract] ; liy W. H. 

 HoBBS 32 



Orustal deformation in the Pacific and Atlantic regions falv 

 stract] ; by W. H. Hobbs 32 



Orogeuic forces [abstract] ; by H. F. Reid 33' 



An objection to the contraction hypothesis as accounting for 

 mountains [absti'act] ; by F. B. Taylor 3.'> 



An origin of crystalline schists [abstract] ; Iiy Charles R. 



Keyes 34 



Sectional meeting 34 



Devonian of Minnesota [abstract] ; by Clinton R. Stauffer. 34 



Devonian of Missouri [abstract] ; by E. B. Branson 35 



Some structural features of Indiana [title] ; by W. N. Logan. 35 



Nicholasville (Kentucky) well [abstract] ; by Arthur M. 

 Miller 35 



Stratigraphic problems in the Columbia Valley between Snake 

 River and Willamette River [abstract] ; by J. Harlen Bretz 36 



Evidences of an unconformity within the pre-Cambrian of the 

 Black Hills of South Dakota [abstract] ; by J. J. Runner. 37 



Stratigraphy and diastrophism of western Newfoundland [ab- 

 stract] ; by Charles Schuchert and Carl O. Dunbar 38 



Stratigraphy of the Moose and Albany rivers of northern 

 Ontario [abstract]; by M. Y. Williams 39 



Age of the Andes [abstract] ; by Edward W. Berry an<l Jo- 

 seph T. vSlNGEWALD, Jr 39 



Pre-Cambrian rocks of Manitoba*; by F. J. Alcock and E. L. 



Bruce 40 



. Occurrence of basal conglomerates [abstract] : by W. H. 



Twenhofel and E. C. Edwards 40 



Llanoria — the Paleozoic land area in Louisiana and eastern 

 Texas [abstract] ; by Hugh D. Miser 40 



Igneous geolog.v of southeastern Idaho [title] : by G. R. Mans- 

 field 41 



Session of Tuesday evening 42 



Important epochs in the history of petroleum and natural gas 

 [title] ; Presidential address by I. C. White 42 



