EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC 
OCEAN—WAR DEPARTMENT. 
ROUTE NEAR THE FORTY-SEVENTH AND FORTY-NINTH PARALLELS,'EXPLORED BY I. I. STEVENS, 
GOVERNOR OF WASHINGTON TERRITORY, IN 1853-’55. 
BOTANICAL REPORT 
WASHINGTON, D. C. 
1 860 . 
