ENGINEER DEPARTMENT, UNITED STATES ARMY. 



REPORT 



UPON 



GEOGRAPHICAL AND GEOLOGICAL 



EXPLORATIONS AND SURVEYS 



WEST OF THE ONE HUNDREDTH MERIDIAN, 



IS CHARGE OK 



FIRST LIEUT. GEO. M. WHEELER, 



CORPS OF ENGINEERS, U. 8. ARMY, 

 UM'EH THE DIRECTION OF 



BRIG. GEN. A. A. HUMPHREYS, 



CHIEF OF KNGIMEEKS, U. S. AI.'MV. 



PUBLISHED BY AUTHORITY OF HON. WM. W. BELKNAP, SECRETARY OF WAR, 



IN ACCORDANCE WITH ACTS OF CONGRESS OF JUNE 23, 1874, AND FEBRUARY IS, 1875. 



IN SIX VOLUMES, ACCOMPANIED BY ONE TOPOGRAPHICAL AND ONE 

 GEOLOGICAL ATLAS. 



CHAPTERS IV AND V. 



VOL. V.-Z00L0GY. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



18 75. 



