TITLES OF PAPERS 18^ 



pointed out tlio lack of liariuony in colors used to represent geologic 

 units in Pacific Coast State and other publications. 



A motion was made and voted tliat a committee of three be appointed 

 to consider a color scheme and report at the December meeting. It was 

 suggested tluit the standard colors adopted by the United States Geo- 

 logical Survey be considered. In age distinctions use the spectrum 

 order of colors. 



Discussed by Drs. Lawson, Tolman, and Merriam. 



The Cliairman appointed the following committee: Bailey Willis, J. C 

 Merriam, and J. A. Tatf. 



At 2.20 p. m. the regular afternoon session was resumed and the fol-^ 

 lowing papers were read : 



GEOLOGIC CROSS-SECTIOX ACROSS THE CASCADE MOUNTAINS AND PUGET 

 SOUND BASIN, WASHINGTON 



BY CHAELES E. WEAVER 



Presented in full extemporaneously. 



Discussed by Bailey Willis, J. C. Merriam, George D. Louderback,. 

 and A. C. Lawson. 



GEOLOGY AND MINERAL RESOURCES OF INYO COUNTY, CALIFORNIA 



BY A. C. WARING 



Read from manuscript. 



FOOTHILL COPPER BELT OF THE SIERRA NEVADA MOUNTAINS, CALIFORNIA 



BY C. F. TOLMAN, JR. 



Presented in full extemporaneously. 



NATURAL HISTORY OF MINERALS 

 BY AUSTIN F. ROGERS 



Presented in full extemporaneously. 



LADD MANGANESE MINE— NOTES ON THE OCCURRENCE OF MANGANESE IN 



CALIFORNIA 



BY G. C. GESTER 



Presented in full. 



At 6 p. m. the session adjourned, 41 members and visitors being present.. 



