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 Doiia Ana, 
1853—Lieut. Parke, topographical engineers, from Dona Ana to Pimas 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... 109 
