SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 64, NUMBER 2 



CAMBRIAN 

 GEOLOGY AND PALEONTOLOGY 



III 



No. 2.— FRE-CAMRRIAN ALGONKIAN ALGAL FLORA 



(With Plates 4 to 23) 



BY 

 CHARLES D. WALCOTT 



(Publication 2271] 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITLTION 



lULY 22, 1914 



