i 1 ; 
; ; QAKISY 
Meg Boe 
1755S 
EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 
WAR DEPARTMENT. 
; REPORT 
ON THE 
BOTANY OF THE EXPEDITION: 
BY 
JOHN TORREY AND ASA GRAY. 
ROUTE ON THE FORTY-FIRST PARALLEL OF NORTH LATITUDE, UNDER THE COMMAND OF LIEUT. E£. G. 
BECKWITH, THIRD ARTILLERY; 
AND 
ROUTE NEAR THE THIRTY-EIGHTH AND THIRTY-NINTH PARALLELS OF NORTH LATITUDE, UNDER THE 
COMMAND OF OAPT. J. W. GUNNISON, CORPS OF TOPOGRAPHICAL ENGINEERS. 
