GLACIATTON OF MANHATTAN ISLAND 709 



and peculiar asymmetric form, are presented in evidence of a strong slope of 

 the general surface to south-southwest at the time of its subsidence during the 

 glacial movement. The undercutting of joint planes facing the northeast has 

 created an unusual feature in topography. 



The seventh and last paper of the day was read by title : 



GLACIAL PHENOMENA OF THE SAN JUAN MOUNTAINS, COLORADO 

 BY ERNEST HOWE AND WHITMAN CROSS 



The paper is printed as pages 251-274 of this volume. 



Session op Thursday Evening, December 28 



In the assembly hall of the Normal School, at 8.15 o'clock, a public 

 lecture, complimentary to the citizens of Ottawa, was given by Dr John 

 M. Clarke, State Geologist and Director of Science, New York State; the 

 subject was 



CONSERVATION OF NIAGARA FALLS 



Session of Friday, December 29 

 The Society met at 9.30 o'clock a m, President Pumpelly in the chair. 



The following resolution, offered by A. C. Lane, was passed by majority 

 vote, after discussion : 



"Resolved, That the Council, if after consideration they find it wise and 

 feasible, employ an expert stenographer to report the discussions in the meet- 

 ings of the Society, such parts thereof to be published after revision by the 

 speakers as the Committee on Publication and the speakers may deem wise." 



AUDITING COMMITTEE'S REPORT 



The Auditing Committee reported that the accounts of the Treasurer 

 had been found correct, and the report was adopted. 



Professor I. C. Eussell suggested that the preparation of a geologic 

 map of North America would be appropriate work for the International 

 Geological Congress. It was voted to appoint a committee to take the 

 matter in hand. The President subsequently named as such special com- 

 mittee I. C. Eussell, C. W. Hayes, F. D. Adams, and J. G. Aguilera. 



The Secretary announced some details of the arrangements for the 

 annual dinner, to occur in the evening, and the program of papers was 

 taken up. 



