CONTENTS 3 



Page 



Session of Tuesday evening 42 



Important epochs in the history of petroleum and natural gas 



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



Structural failure of the lithosphere [title] ; Vice-Presidential ad- 

 dress by C. K. Leith 42 



Annual smoker 42 



Session of Wednesday morning, December 29 42 



Report of the Auditing Committee 42 



Affiliation with Society of Economic Geologists 43 



Titles and abstracts of papers presented at the morning session and 



discussions thereon 44 



Geology and geography in the United States [abstract] ; by Ed- 

 ward B. Mathews and Homer P. Little 44 



Pre-Cambrian problems [abstract]; by J. J. Sederholm 44 



Mobility of the coast ranges of California [abstract] ; by Andrew 



C. Lawson 45 



Certain marked differential movements in the San Francisco Bay 



region [abstract and discussion] ; by George D. Louderback 45 



Vote of welcome to Prof. T. C. Chamberlin 46 



The greater eartli [title] ; by T. C. Chamberlin 46 



Groundwork of the earth's diastrophism [title] ; by T. C. Cham- 

 berlin 46 



Session of Wednesday afternoon, December 29 46 



Titles and abstracts of papers presented at the afternoon session and 



discussions thereon 46 



Solitario uplift, Presidio-Brewster counties, Texas [abstract] ; by 



Sidney Powers 46 



Great fault troughs of the Antilles [abstract and discussion] ; by 



Stephen Taber 47 



Hercynian orogenic movements in southern Oklahoma [abstract] ; 



by R. C. Moore , 48 



Framework of the earth [title] ; by Peter McKellar 48 



Origin and distribution of the loess [abstract] ; by G. Frederick 



Wright 48 



Valley gravels of northwestern Iowa [abstract] ; by James H. Lees 49 

 Glacial section at Calgary, Alberta [abstract] ; by Edward M. 



Burwash 51 



A late Pleistocene readvance of the ice-sheets in the Vancouver 

 region, British Columbia [abstract and discussion] ; by W. A. 



Johnston 51 



Sedimentation in the recent delta of Fraser River, British Colum- 

 bia, Canada [abstract] ; by W. A. Johnston 52 



Notes on the Kennecott Glacier, Alaska [abstract and discus- 

 sion] ; by Alan M. Bateman 52 



Postglacial changes of level in Newfoundland and Labrador [ab- 

 stract] ; by Reginald A. Daly 53 



Accordant levels in the White Mountains [abstract] ; by Alfred C. 

 Lane 53 



