390 PROCEEDINGS OF THE CALIFORNIA MEETING 



Page 



Geology of portions of western Washington [abstract] ; by 

 Charles E. Weaver 397 



Problem of the Texas Tertiary sands [abstract] ; by E. T. Dumble. 398 



Pisolites at San Antonio, Texas [abstract] ; by Alexander Deussen. 398 



Geologic age of the Coal Creek batholith and its bearing on some 

 other features of the geology of the Colorado front range [ab- 

 stract and discussion] ; by Hyriun Schneider 398 



Occurrence of flow-breccias in Colorado [abstract and discussion) : 

 by Horace B. Patton 399 



Geology of a portion of the Santa Ynez River district, Santa Bar- 

 bara County, California [abstract] : by W. S. W. Kew 401 



Interesting changes in the composition of the Salton Sea [ab- 

 stract] ; by A. E. Vinson 402 



Examples of successive replacement of earlier sulphide minerals 

 by later sulphides at Butte, Montana [abstract and discussion] ; 

 by J. C. Ray 402 



Structure of the southern Sierra Nevada [abstract] ; by John P. 

 Bulwada 403 



A measure of arid erosion [abstract] ; by Charles Keyes 404 



A possible causal mechanism for heave fault-slipping in the Cali- 

 fornia Coast Range region [abstract] : by Harry O. Wood 404 



Structural features of the Tsin Ling Shan [abstract] ; by George 

 D. Louderback 40~i 



Certain structural features in the coal fields of New Mexico [ab- 

 stract] ; by Charles T. Kirk 405 



Deformation of the coast region of British Columbia [abstract] ; 

 by Charles H. Clapp 400 



Study of ninety thousand pomids of mammoth tusks from Lena 



River, Siberia ; by George Frederick Kiinz 407 



Excursions 407 



Register of the California meeting 408 



Session of Tuesday, August 3 



The first session of the Society was called to order at 10 o'clock a. m.. 

 Tuesday, August 3, in the auditorium of Bacon Hall, University of Cali- 

 fornia, by C. P. Tolman, Jr., Chairman of the Cordilleran Section, in the 

 absence of President Arthur P. Coleman. Seventy-five members and 

 visitors were present. After announcements in regard to proposed excur- 

 sions, the dinner, and the official program, the Chairman declared the 

 reading of papers to be the regular order. 



It was proposed to take up the papers in the order given in the printed 

 program; those under Topic A, "Erosion and Deposition in Arid Cli- 

 mates," at the first session, held at the University of California, August 

 3; thopc under Topic B, "Petrologic Problems of the Pacific Area," at 

 Stanford University, August 4; and those under Topic C, "Diastrophism 



