SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 64 



CAMBRIAN 

 GEOLOGY AND PALEONTOLOGY 



BY 



CHARLES D. WALCOTT 



EVERY MAN IS A VALUABLE MEMBER OF SOCIETY WHO, BY HIS OBSERVATIONS, RESEARCHES, 

 PROCURES KNOWLEDGE FOR MEN " — SMITHSON 



(Publication 2428; 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



1916 



