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



WAR DEPARTMENT. 



HEPOET 



LIEUT. E. G. BECKWITH, 



THIRD ARTILLEEY, 



EXPLORATIONS FOR A RAILROAD ROUTE, 



THE 38TH AND 39TH PARALLELS OF lORTH LATITUDE, 



CAPTAIN J. W. GUNNISON, 



CORPS OP TOPOGRAPHICAL ENGINEERS, 



AND NEAR 



THE FORTY FIRST PARALLEL OF NORTH LATITUDE, 



LIEUT, E. G. BECKWITH, 



THIRD ARTILLERY. 



185 4. 



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