SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 57, NUMBER 2 



CAMBRIAN 

 GEOLOGY AND PALEONTOLOGY 



II 



No. 2— MIDDLE CAMBRIAN MEROSTOMATA 



With Six Plates 



BY 



CHARLES D. WALCOTT 



(Publication 2009) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



APRIL 8, 1911 



