BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 



Vol. 10, pp. 409-534, PLS. 49-54 JANUARY 19, 1900 



PROCEEDINGS OF THE ELEVENTH ANNUAL MEETING, HELD 

 AT NEW YORK CITY, DECEMBER 28, 29, AND 30, 1898 



Herman Lb Roy Fairchild, Secretary 



CONTENTS 



Page 



Session of Wednesday, December 28 4] 6 



Report of the Council 410 



Secretary's report ...... 411 



Treasurer's report 416 



Editor's report 420 



Librarian's rejaort 422 



Election of officers 42.3 



Election of Fellows 424 



Memoir of James Hall [with bibliography] ; by J. J. Stevenson 325 



Upper Ordovician faunas in La^ke Champlain valley [with discussion] ; 



by Theodore G. White ." 452 



Session of Thursday, December 29 463 



Ninth annual report of Committee on Photoojraphs 463 



Session of Friday, December 30 480 



Conshohocken plastic clays ; by T. C. Hopkins 480 



Remarkable landslip in Portneuf county, Quebec ; by George M. Dawson. 484 



Thames River terraces in Connecticut ; by F. P. Gulliver 492 



Gold-bearing veins of Bog bay, lake of the Woods [abstract] ; by Peter 



McKellar 495 



Origin of the Highland gorge of the Hudson river [abstract] ; by F. J. H. 



Merrill ' 498 



Proceedings of the Petrographic section 499 



Difference in batholitic granites according to depth of erosion [abstract] ; 



by B. K. Emerson 499 



Mica deposits of the United States [abstract] ; by J. A. Holmes 501 



Register of the New York meeting, 1898 504 



Officers and Fellows of the Geological Society of America 505 



Accessions to library from March, 1898, to March, 1899; by H. P. Cashing. . . 515 

 Index to volume 10 -. . . . 527 



LIX— Bull. Geol. Soc. Am., Vol. 10, 1898 (-109) 



