182 PKOCEEDINGS OF THE CORDILLERAN SECTION 



NOTtJS ON MOUNT LASSEN ERUPTIONS 

 BY J. S. DILLER 



Discussion by J. C. Jones and others. 



At 12.15 p. m. the session adjourned for luncheon. 



The afternoon session was called to order by Chairman C. F. Tolmafl, 

 Jr., at 2 p. m. and the following papers were read : 



GEOLOGY OF PORTIONS OF WESTERN WASHINGTON 

 BY CHARLES E. WEAVER 



Presented in full. 



Discussion by John P. Buwalda. 



THE PROBLEM OP THE TEXAS TERTIARY SANDS 

 BY E. T. DUMBLE 



Read in full. 



Discussion by Alexander Deussen and Dr. Matthew. 



PISOLITES AT SAN ANTONIO, TEXAS 

 BY ALEXANDER DEUSSEN 



Read in full. 



Discussion by Messrs. Matthew, Clarke, and Turner. 



GEOLOGIC AGE OF THE COAL CREEK BATHOLITH AND ITS BEARING ON 



SOME OTHER FEATURES OF THE GEOLOGY OF THE 



COLORADO FRONT RANGE 



BY HYRUM SCHNEIDER 



Presented in full. 



Discussion by Messrs. Patton, Haworth, and Bastin. 



OCCURRENCE OF FLOW-BRECCIAS IN COLORADO 

 BY H. B. PATTON 



Presented in full. 

 Discussion by E. Haworth. 



GEOLOGY OF A PORTION OF THE SANTA YNEZ RIVER DISTRICT, SANTA 

 BARBARA COUNTY, CALIFORNIA 



BY W. S. W. KEW 



Read in full. 



SOME INTERESTING CHANGES IN THE COMPOSITION OF THE SALTON SEA 



BY A. E. VINSON 



Read by ihe author. 



