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CONTENTS 



t»agd 

 Proceedings of the Twenty-fourth Annual Meeting of the Geological Society 

 of America, held at Washington, D. C, December 27, 28, 29, and 30, 1911 ; 



Edmund Otis Hovey, Secretary 1 



Session of Wednesday, December 27 2 



Election of Auditing Connnittee 2 



Election of oflScers 2 



Election of Fellows 3 



Memoir of Samuel Calvin (with bibliography) ; by B. Shimek. ... 4 



Memoir of S. F. Emmons (with bibliography) ; by Arnold Hague. 12 



Memoir of C. W. Hall (with bibliography) ; by N. H. Winchell. . 28 



Memoir of Ed\\'in E. Howell ; by G. K. Gilbert 30 



Memoir of A. Michel -Levy ; by Alexander N. Winchell 32 



Bibliography of W. H. Niles (with portrait) ; by George H. Barton 34 



Report of the Committee on Photographs 35 



Appointment of Committee on Correspondentship 35 



Titles of papers and names of disputants 35 



Session of Thursday, December 28 38 



Report of the Council 38 



Secretary's report 38 



Treasurer's report 40 



Editor's report 42 



Report of the Auditing Committee 44 



Titles of papers and names of disputants 44 



Resolution concerning the naming of Powell National Park 44 



Titles of papers and names of disputants 44 



Annual dinner 46 



Session of Friday, December 29 47 



Titles of papers and names of disputants 47 



Presidential address 49 



Session of Saturday, December 30 49 



Titles of papers and names of disputants 49 



Resolution of thanks 51 



Register of the Washington meeting, 1911 ' . . . . 53 



OflEicers, Correspondents, and Fellows of the Geological Society of ^ 



America 55 



Proceedings of the Twelfth Annual Meeting of the Cordilleran Section of 

 the Geological Society of America, held at Berkeley, California, March 



31 and April 1, 1911 ; George D. Louderback, Secretary 69 



Session of Friday, March 31 69 



Election of officers 70 



Representation on the Council 70 



Neocolemanite, a variety of colemanite, and howlite from Lang, 



Los Angeles County, California [abstract] ; by A. S. Eakle 70 



Mineral associations at Tonopah, Nevada [abstract] ; by A. S. 



Eakle 70 



Note on mountain-producing forces [abstract] ; by H. F. Reid 71 



(iii) 



