Page.
Letter of Secretary of War - 5
Chief of Engineers - 7
Lieutenant Wheeler - 9
Introduction - 11
Letter of instructions - 11
Co-operation of the Supply Departments of the Army - 12
Medical Department of the Army - 12
Officers of the expedition - 12-13
Escort - 13
United States Naval Observatory - 13
Western Union Telegraph Company - 13
United States Lake Survey - 13
Instruments - 13

CHAPTER I.

Organization of expedition - 15
From Rendezvous No. 1, Halleck Station, Nevada, to Rendezvous No. 2, near Belmont, Nevada - 15
From Rendezvous No. 2, Belmont, to Rendezvous No. 3, at Camp Independence, California - 15
From Rendezvous No. 3, Camp Independence, California, to Rendezvous No. 4, at Cottonwood Springs, Nevada - 16
From Rendezvous No. 4, Cottonwood Springs, to Rendezvous No. 5, at Truxton Springs, Arizona - 17
From Rendezvous No. 5, Truxton Springs, to Rendezvous No. 6, at Prescott, Arizona - 18
From Rendezvous No. 6, Prescott, Arizona Territory, to Rendezvous No. 7, at Camp Apache, Arizona - 19
From Rendezvous No. 7, Camp Apache, Arizona, to Rendezvous No. 8, Camp Lowell, Tucson, Arizona Territory - 19
Extent of reconnaissance line - 19
Area traversed - 19
Cost of survey, etc - 19

CHAPTER II.

Astronomical - 21
Topographical - 21
Physico-geographical - 22
Meteorological - 24
Geological - 24
Natural history - 25
Mineralogy - 25
Magnetic observations - 25
Photographs - 25
Means of communication - 25
Indians - 27
Sites for military posts - 29
Influence of climate - 30
Agricultural and grazing lands - 31
Mines - 32
List of mining questions - 32

MINING DISTRICTS.

Bull-Run and Cope districts, Nevada - 34
Lone Mountain district, Nevada - 35
Tuscarora and Railroad districts, Nevada - 35
Mineral Hill district, Nevada - 35
Diamond and Racine districts, Nevada - 36
Eureka district, Nevada - 37
Sierra or Secret Cañon district, Nevada - 37
Pinto district, Nevada - 37
Morey district, Nevada - 38
White Pine and Spring Valley districts, Nevada - 39
Antelope district, Nevada - 39
Hot Creek and Empire districts, Nevada - 39
Rattlesnake Cañon district, Nevada - 39
Tyboe and Battle Mountain districts, Nevada - 40
Yankee Blade and Reese River districts, Nevada - 40
Kingston district, Nevada - 41
North Twin River district, Nevada - 41
Twin River and Jefferson districts, Nevada - 41
Manhattan and Mountain Chief districts, Nevada - 41
Silver Bend district, Nevada - 41
Reveille district, Nevada - 42
Freiberg district, Nevada - 42
Ely district, Nevada - 42
Highland district, Nevada - 43
Blind Mountain district, Nevada - 43
Cedar district, Nevada - 43
Pahranagat Lake district, Nevada - 43
Tim-pah-ute district, Nevada - 44
Groom district, Nevada - 44
Southeastern district, Nevada - 45
Page.
Waucova district, California - 45
San Antonio district, Nevada - 45
Montezuma district, Nevada - 46
Blind Spring district, California - 46
Alida district, Nevada - 47
Gold Mountain district, Nevada - 47
Palmetto district, Nevada - 47
Green Mountain district, Nevada - 47
Columbus district, Nevada - 48
Oneata district, California - 48
Montgomery district, California - 48
Silver Peak and Red Mountain districts, Nevada - 48
Deep Spring Valley district, California - 49
Fish Spring district, California - 50
Kearsarge district, California - 50
San Carlos district, California - 50
Lone Pine district, California - 50
Coso district, California - 51
Granite Mountain district, California - 51
Telescope district, California - 52
Lyons district, California - 52
Death Valley district, California - 52
El Paso district, California - 52
Amargosa district, California - 52
Timber Mountain district, Nevada - 52
Yellow Pine district, Nevada - 52
Clarke district - 53
New York district, Nevada and California - 53
Hualpais district, Arizona - 53
Maynard district, Arizona - 54
Tiger district, Arizona - 54
Pine Grove district, Arizona - 55
Bradshaw district, Arizona - 55
Turkey Creek district, Arizona - 55
Weaver district, Arizona - 55
Walnut Grove district, Arizona - 55
Hassyampa district, Arizona - 56
Martinez district, Arizona - 56
Santa Maria district, Arizona - 56
Vulture Mine, Arizona - 56
Mines in Pinal Mountains, Arizona - 56
Maps - 59
Conclusion - 60
Territory yet to be surveyed - 61

APPENDIX A.

Report of Daniel W. Lockwood, First Lieutenant of Engineers - 62
From Truxton Springs to Prescott, Arizona - 67
From Prescott to Camp Apache, Arizona - 68
Agricultural lands - 70
Grazing lands - 71
Woodlands - 72
Mineral lands and mines - 72
Natural history - 73
Geology - 73
Meteorology - 73
Means of communication, routes for roads, &c - 74
Indians - 74

APPENDIX B.

Report of Second Lieutenant D. A. Lyle, Second United States Artillery - 76
From Belmont, Nevada, to Camp Independence, California - 77
From Camp Independence to Gold Mountain and return - 80
From Camp Independence to Cottonwood Springs, Nevada - 83
From Cottonwood Springs to Saint Thomas, Nevada. - 85
From Saint George, Utah, to the Crossing of the Colorado - 85
From Truxton Springs to Prescott, Arizona Territory, via Camp Date Creek and Bradshaw Mountains - 86
From Prescott, Arizona Territory, to Tucson, Arizona Territory, via Camp Apache - 87
Recapitulation - 88
Valleys - 88
Mountains - 88
Indians - 88
Agricultural lands - 89
Grazing lands - 89
Mining districts - 89
Means of communication - 90
Remarks - 90

APPENDIX C.

Report of Assistant Edward P. Austin - 91
Carlin, Nevada - 91
Battle Mountain, Nevada - 91
Austin, Nevada - 91
Camp Independence, California - 91
Salt Lake City - - 91
Probable character of results - 92

APPENDIX D.

Report of Assistant G. K. Gilbert - 92

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