SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOLUME 75. NUMBER 4 



CAMBRIAN 

 GEOLOGY AND PALEONTOLOGY 



No. 4.— PRE-DEVONIAN SEDIMENTATION IN SOUTHER 

 CANADIAN ROCKY MOUNTAINS 



(With Plate 25) 



BY 

 CHARLES D. WALCOTT 



(Publication 2870) 



CITY OF WASHINGTON 



PUBLISHED BY THE SMITHSONIAN INSTITUTION 



APRIL 2, 1927 



