DEPAETMENT OF THE INTERIOR 



U. S. GEOGRAPHICAL AND GEOLOGICAL SURVEY OF THE ROCKY MOUNTAIN REGION 

 J. W. POWELL IN Charge 



A STUDY 



MANUSCEIPT TEOANO 



CYRUS THOMAS Ph. D, 



INTRODUCTION BY D. G. BRINTON M. D. 



WASHINGTON 



GOVERNMENT FEINTING OFFICE 



1882 



