SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 56, NUMBER 5 



A PRELIMINARY STUDY OF CHEMICAL 

 DENUDATION 



FRANK WIGGLESWORTH CLARKE 

 Chief Chemist, U. S. Geological Survey 



(Publication 1935) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



JUNE, 1910 



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