IV BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA. 



Page 



Session of Tuesday, December 29 359 



Report of the Council 360 



Secretary's report 360 



Treasurer's report 365 



Editor's report , 367 



Election of officers 369 



Election of Fellows 369 



Memoir of Robert Hay [with bibliography] ; by Robert T. Hjll. . . 370 

 Memoir of Charles Wachsmuth [with bibliography] ; by Samuel 



Calvin 374 



Memoir of N. J. Giroux ; by R. W. Ells 377, 



Session of Tuesday evening, December 29 379 



Session of Wednesday, December 30 380 



Seventh annual report of the committee on photographs 380 



Note on the stratigraphy of certain homogeneous rocks [abstract] ; 



by C. H. Hitchcock 389 



Session of Thursday, December 31 393 



Proceedings of the Petrographic Section 393 



Aporhyolite of South mountain, Pennsylvania; by Florence Bascom 393 

 Age of the white limestone of Sussex county, New Jersey [abstract] ; 



by J. E. Wolff and Alfred H. Brooks 397 



Origin and relations of the Grenville- Hastings series of the Canadian 

 Laurentian [abstract] ; by Frank D. Adams and Alfred E. Bar- 

 low 398 



Note on "Origin and relations of the Grenville-Hastings series of 



the Canadian Laurentian " ; by R. W. Ells 401 



Grain of rocks [abstract] ; by Alfred C. Lane 403 



Physiography of the eastern Adirondacks in the Cambrian and Ordo- 



vician periods ; by J. F. Kemp 408 



Letter of Lieutenant R. E. Peary, and resolutions relating thereto . . 413 



Register of the Washington meeting, 1896. . . 417 



Officers and Fellows of the Geological Society of America 419 



Accessions to the library from March, 1896, to March, 1897 429 



Index to volume 8 , 439 



ILLUSTRATIONS 



Plates 



Plate 1 — Brigham : Glacial flood deposits in Chenango valley 17 



2 — Taylor: Erie-Huron beaches in southeastern Michigan and their 



related outlets and moraines 31 



3 — Emerson : Inclusion of mud in upper surface of trap sheet (2 figures) . 80 



4 . " Trap ridge east of Greenfield 81 



5 " Detail of trap ridge east of Greenfield 82 



6 " Detail of trap ridge east of Greenfield 83 



7 " Thin-sections of material from Greenfield and Meriden 

 "Ash bed " (5 figures) 84 



8 " Thin-sections of material from Meriden "Ash bed" (5 

 figures) 85 



( i 



