SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 92, NUMBER 10 



RECENT DISCOVERIES OE CAMBRIAN 



BEDS IN THE NORTHWESTERN 



UNITED STATES 



BY 



CHARLES ELMER RESSER 



Curator, Division of Invertebrate Paleontology, 



U.S. National Museum 



(Publication 3284) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



NOVEMBER 6, 1934 



