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



WAR DEPARTMENT. 



ROUTE NEAR THE 38th AND 3'Jth PARALLELS, EXPLORED BY CAPTAIN J. W. GUNNISON, AND NEAR THE 41st 

 PARALLEL, EXPLORED BY LIEUTENANT E. G. BECEWITH. 



ZOOLOGICAL REPOET.' 



WASHINGTON, D. C. 

 1857. 



' The report to which the present article belongs will be found in Vol. II of the series. 



