• r )02 PROCEEDINGS OF THE WASHINGTON MEETING 



teristic of it. When late in the Tertiary or in the early Pleistocene the range was 

 somewhat sharply uplifted, the streams were given new vigor. The larger streams 

 cut much more rapidly than the smaller ones, and formed the present deep river 

 canyons, while many of the smaller streams occupying depressions inherited from 

 the Tertiary have cut much less rapidly, and hence these depressions remain as 

 banging valleys. It is quite certain that the entire range was subjected to the same 

 influences, and it hence seems logical to suppose that the main topography of the 

 range was carved in early Pleistocene time very largely by water action, and in 

 the glaciated region these water-formed valleys and canyons were very consider- 

 ably modified by the glacial ice. The Glacial period of the Sierras can be placed 

 in the middle or later Pleistocene, and is relatively shorter than the period of 

 erosion which preceded it, and which I designate, following Le Conte, the Sierran 

 period. 



Remarks were also made by I. C. Russell, J. J. Stevenson, A. C. Spencer, 

 I. C. White, S. F. Emmons, the President, and the author. 



President Emerson read an invitation from Professor Cleveland Abbe 

 inviting the Fellows to his home. 



The following two papers were read by their author : 



MOVEMENT OF GLACIERS 



BY HARRY FIELDING REID 



STRATIFICATION AND BANDED STRUCTURE OF GLACIERS 



BY HARRY FIELDING RBID 



Immediately following the reading of Doctor Reid's papers the Society 

 adjourned for luncheon. Upon reassembling, the discussion of the papers 

 was given place, and remarks were made by Bailey Willis and the 

 President. 



The first paper of the afternoon session was by the Secretary, presented 

 briefly, with aid of lantern views. 



A CHANNELED DRUM LIN 

 BY H. L. FATRCHILP 



The second paper was entitled : 



UPPER AND LOWER HURON IAN IN ONTARIO 

 BY A. P. COLEMAN 



Remarks were made by C. D. Walcott. The paper is printed as pages 

 107-114 of this volume. 



