EXPLORATIONS AND SURVEYS FOR A RAILROAD ROUTE FROM THE MISSISSIPPI RIVER TO THE PACIFIC OCEAN. 



WAR DEPARTMENT. 



ROUTE NEAR TBE FORTY-SEVENTH AND FORTY-NINTH PARALLELS, EXPLORED BY I. I. STEVENS, 

 GOVERNOR OF WASHINGTON TERRITORY, IN 1853-55. 



ZOOLOGICAL REPORT. 



WASHINGTON, D. C 



1859 . 



