JENGINEER DEPARTMENT, U. S. ARMY. 
EEPOllT 
LT’ON 
United States Geographical Surveys 
YYEST OF THE ONE HUNDREDTH MERIDIAN, 
IS CILVRGE OF 
FIRST LIEUT. GEO. M. WHEELER, 
CORPS OP KKGINEEUS, U. S. ARMY, 
USDEU THE DUUCCTION OF 
BEIG. GEN. A. A. HUMPHEEYS, 
CHIRP OP ENGINEERS, U. S. ARMY. 
PUBLISHED BY AUTHORITY OF THE HONORABLE THE SECRETARY OF WAR, 
IX ACCORDANCE TVITN ACTS OF CONGRESS OF JUNE 23, 1874, AND FEBRUARY 15, 1875. 
IN SEVEN VOLUMES, ACCOMPANIED BY ONE TOPOGRAPHICAL AND ONE 
GEOLOGICAL ATI.AS. 
