EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
WAR DEPARTMENT. ‘ 
REPORT : 
1 i N 3 « 
< a 2 aoe ‘ON THE 
Pu # 
; ‘BY 
JOHN TORREY AND ASA GRAY. 
ROUTE NEAR THE THIRTY-SECOND PARALLEL OF NORTH LATITUDE, UNDER THE COMMAND OF BREVET a 
CAPTAIN JOHN POPE, CORPS OF TOPOGRAPHICAL ENGINEERS. eo. 
