SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 57, NUMBER 9 



CAMBRIAN 



GEOLOGY AND PALEONTOLOGY 



II 



No. 9.-NEW YORK POTSDAM-HOYT FAUNA 



With Plates 37-49 



BY 



CHARLES D. WALCOTT 



(Publication 2136) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



SEPTEMBER 14, 1912 



