BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



VOL. 11, PP. 511-651, PLS. 51-58 OCTOBER 31, 1900 



PROCEEDINGS OF THE TWELFTH ANNUAL MEETING, HELD 

 AT WASHINGTON, D. C, DECEMBER 27, 28, 29, AND 30, 1899, 

 INCLUDING PROCEEDINGS OF FIRST ANNUAL MEETING 

 OF THE CORDILLERAN SECTION, HELD AT SAN FRAN- 

 CISCO DECEMBER 29 AND 30, 1899 



Herman Le Roy Fairchild, Secretary 



CONTENTS 



Page 



Session of Wednesday, December 27. . \ < 512 



Report of the Council * 512 



Secretary's report 512 



Treasurer's report 515 



Editor's report i 517 



Librarian's report 519 



Election of officers 519 



Election of Fellows 520 



Memoir of Othniel Charles Marsh [with bibliography] ; by Charles E. 



Beecher , 521 



Memoir of Oliver Marcy ; by Alja R. Crook 537 



Memoir of Edward Orton [with bibliography] ; by G. K. Gilbert 542 



Memoir of Sir J. William Dawson [with bibliography by H. M. Ami] ; by 



Frank D. Adams 550 



Erosion forms in Harney Peak district, South Dakota [abstract, with dis- 

 cussion] ; by Edmund Otis Hovey 581 



Landslides of the Rico mountains, Colorado [abstract, with discussion] ; 



by Whitman Cross 583 



Session of Wednesday evening, December 27 584 



Session of Thursday, December 28 ..... . .". . . 584 



Tenth annual report of Committee on Photographs 584 



Organization of the Cordilleran Section 587 



Glacial erosion in the A ar valley [abstract, with discussion] ; by Albert P. 



Brigham • • • &88 



Session of Friday, December 29 593 



Council's recommendations concerning Geological Congress delegates and 



compensation to Secretary and Editor 593 



Relative ages of the Kanawha and Alleghany series as indicated by the 

 fossil plants [discussion] ; by David White. 594 



LXXIII— Bull. Geol. Soc. Am., Vol. 11, 1899 (511) 



