TABLE OF CONTENTS. 



CHAPTER I. 



Page. 

 Route of forty-seventh and forty ninth parallels, from surveys under Gov. Stevens, in 1853-4 39 



CHAPTER II. 



Route of forty-first and forty-second parallels, from surveys of Lieut. E. G. Beckwith, 3d artillery, 1852 Brevet 



Capt. J. C. Fremont, topographical engineers, in 1842-3 and Capt. Stansbury, in 1849 56 



CHAPTER III. 



Route of thirty-eighth and thirty-ninth parallels, from surveys under Capt. Gunnison, topographical engineers, and 



Lieut E. G. Beckwith, 3d artillery, in 1853. . 71 



CHAPTER IV. 

 Route of thirty-fifth parallel, surveyed by Lieut. Whipple, topographical engineers, in 1853 74 



CHAPTER V. 



Route of thirty-second parallel, surveyed by Capt. J. Pope, topographical engineers, from Preston to Dona Ana, 

 1853 Lieut. Parke, topographical engineers, from Dona Ana to Piinas Villages, 1853 Major Emory, topo 

 graphical engineers, from Pimas Villages to mouth of Gila, 1848 Lieut. Williamson, topographical engineers, in 

 California, 1853 79 



CHAPTER VI. 



Notes from Dr. Wislizenus s report on the Cimarron route from Independence, Missouri, to Santa Fe, and from the 

 reports of Col. Johnston, topographical engineers, Lieut. Smith, topographical engineers, Capt. S. G. French, United 

 States artillery, and others, of the route from San Antonio to El Paso ]09 



