SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 57, NUMBER ii 



CAMBRIAN 

 GEOLOGY AND PALEONTOLOGY 



II 



No. IL-NEW LOWER CAMBRIAN SLBEAUNA 



(With Plates 50 to 54) 



BY 



CHARLES D. WALCOTT 





(Publication 2185) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



JULY 21, 1913 



