iv BULLETIN OF THE GEOLOGlCi\L SOCIETY OF AMERICA 



Page 

 Proceedings of the Eleventh Annual Meeting, held at New York city, Decem- 

 ber 28, 29, and 30, 1898 ; H. L. Fairchild, Secretary 409 



Session of Wednesday, December 28 . . . 410 



Report of the Council 410 



Secretary's report 411 



Treasurer's report 416 



Editor's report 420 



Librarian's report ... 422 



Election of officers 423 



Election of Fellows 424 



Memoir of James Hall [with bibliography] ; ])y J. J. Stevenson 425 



Upper Ordovician faunas in Lake Champiain valley [with discussion] ; 



by Theodore G. White 452 



Session of Thursday, December 29 . 463 



Ninth annual report of Committee on Photographs 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 [ab- 

 stract] ; by B. K. Emkrson ... 499 



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



Register of the New York meeting, 1898 •. 504 



Otiicers and Fellows of the Geological Society of America 505 



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

 Index to volume 10 527 



ILLUSTRATIONS 



Plates 



Plate 1 — Patton : Tourmaline schists '. 24 



" 2 " Tourmaline schists 25 



" 3 — Fairchild: Glacial and glacial lake geology of western New York. . 27 



" 4 " Gulf channel. .. . 46 



" 5 " Gulf channel (2 figures) 50 



" () " Cedarville channel (2 figures) 54 



" 7 " Reservoir channel southwest of Jamesville (2 figures). . 58 



" 8 " Railroad channel (2 figures) 62 



"9 " E.xtinct cataracts (2 figures) 66 



" 10 — Gulliver : Views in the Urals (4 figures) SO 



" 1 1 — Okton : Structure of lola gas field of Kansas 99 



" 12 — Gilbicrt: Anticline at Thirtymile point. New Y''ork 131 



