584 PROCEEDINGS OF THE WASHINGTON MEETING 



phenomena in central Washington, and the subsequent mapping of this quadrangle 



has shown that landslides occur in every formation except the granodiorite. They 

 vary in extent from blocks a few yards across to areas of slipped rock-masses that 

 measure miles. These landslides also vary much in age, some showing terraces 

 carved upon them in early Pleistocene time, others so fresh that vegetation has 

 not yet gained a foothold, while cracks at some distance back from the escarp- 

 ments show the beginnings of future landslides. 



Remarks were also made by W. M. Davis and W. H. Niles. 



The last paper presented on Wednesday was the following : 



FAULT SCARP IN THE LEPINI MOUNTAINS, ITALY 

 BY W. M. DAVIS 



This paper is printed as pages 207-216 of this volume. 



Session of Wednesday Evening, December 27 



The Societ}' convened at 8.30 o'clock fur the presidential address, 

 which was read with the aid of lantern views. The address was entitled 



THE TETRAHEDRAL EARTH AND ZONE OF THE INTERCONTINENTAL SEAS 

 BY THE PRESIDENT, BENJAMIN K. EMERSON 



The address is printed as pages 61-10G of this volume. 



Session of Thursday, December 28 



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



The report of the Council was taken from the table and adopted with- 

 out remarks. 



Doctor E. 0. Hovey reported that the Auditing Committee had found 

 the accounts of the Treasurer correct, and the Society adopted the report. 



The Committee on Photographs submitted its report as follows: 



TENTH ANNUAL REPORT OF COMMITTEE ON PHOTOGRAPHS 



The committee have to report the addition of 35 views, bringing the 

 full number in the collection up to 1.913. A list of these is given below. 



r l ne number of accessions, it will be noted, is comparatively small. 

 This is due in part to the apathy of the members of the Society and in 

 part to the fact that the chairman has not felt it advisable to continue 

 longer to accept without discrimination all that were offered. 



