214 
INDEX. 
Page. 
Cane Spring, rocks near 143-14'., L49 
Captain .lack Spring, flow of 119 
Carboniferous rocks, occurrence ami char- 
acter of 30 
Cave Hock Spring, rocks near 164 165 
CCnt ral mine, description of 188 
Chapman, R. II., work of 13,58 
Chief Kawich mine, description of 112-113 
Childers, E. A., work of 13 
Chloride Clifl ore deposits at 45,46, 173-175 
ricks near 161, 162 
springs near 162 
Chonetes permianus, occurrence of 122 
sp., occurrence of 122 
Cladopora, occurrence of L65 
Cliff Spring, rocks near 126 
water from 113,119 
Climate, description of 17 
Colemanite, occurrence of 197, 201 
Columnar section of rocks of area 27 
Combination Mines Company, water sup- 
ply of 19 
Contact veins, ore deposits in 16,49,81 82 
Copper, occurrence of 130 
Corral Spring, How of 100 
Cottonwood Creek, description of 19 
rocks on 209,211 
Court. J. C discoveries by 81 
Cow Creek, water of 197 
Crinoids, occurrence of 204 
Crystal Spring, How of 176 
rocks near 182 
Culture, description of 24-26 
Cuprite disl rid. ore deposits in 46,09-71 
Currie Well, rocks near 171,176,182 
P. 
Dacite, definition of 37 
occurrence and character of 32, 
34,61 62,73, 106-107,181 
Daggett, rocks nea r 33 
Daylight Spring, flow of 162 
rocks near 165-168, 171, 172,176 
heath Valley, depth to water in 21 
economic geology of 201 
elevation of 16, 196 
formation of 41 
geologic history of 200-201 
geology of 32, 36, 197-200 
section of 199 
figure showing 198 
soil from, analysis of 197 
topography of 195 L97 
view in 36 
Decillion claim, description of 156-157 
Derbya sp., occurrence of 122 
Devonian rocks, occurrence of 294 
Devonian time, history in 39 
Dikes., occurrence and character of 31, 
33,52-54,58-59 
Diorite. definition of 37 
occurrence and character of 31, 53 54 
Diorite porphyry, definition of 37 
occurrence and character of . . . 53 " 1 . 1 K) 61, 67, 
91, 103, 156, 167, 179, 186, 193, 208-209 
Drainage, description of 16,17,18 19 
E. Page. 
Eccyliopterus sp., occurrence of 155,2ffl 
Echo Canyon, mines of 175 
Economic conditions, description of 43-44 
Economic geology, description of 42 .",(), 
54-55, 63-65, 69-71, 76, 81-83, 88-a 
Eden, ore deposits at 40, 110-111 
Electricity, use of.". 43-44 
Emigrant Spring, (low of 202 
rocks nea r 204 
Emigrant Wash, rocks near 201,209 
Emmons, W. H. work of 15, 71, la 
Erosion, history of 40,41-42 
Eureka district. Nev., rocks of 28-29 
Eureka quartzite, occurrence and character 
of 29, 90, 96, 100-102, 155, 1 77-178 
F. 
Fault zones, ore deposits in 49 
Faulting, occurrence of 39-41 
Fenestella sp., occurrence of 122,204 
Florida-Goldfleld Mining Company, prop- 
erty of 04 
Fortymile Canyon rocks near 133 
Funeral Mountains, location of 160 
roc k s of 1 16 
Furnace ('reek, rocks on i<>0 
soil near, analysis of 197 
Fusulina sp., occurrence of 122,204 
(i. 
Gabbard John, discovery by 138 
Ganey, G. 11.. work of 15,71,177,lffl 
General Thomas Camp, rocks at 51-55 
( l-eneral Thomas mine, ores of 46,f>4-55 
Geography. See Topography. 
Geologic history, account of 38-42 
Geologic map of altered Tertiary rocks 43 
of southwestern Missouri and eastern 
California 20 
Geology, description of 26-42 
Geology, economic, account of 42-50, 
54 55, 63 65, 69 71, 76, 81-83, 88-89, 
94-95, 108-113. 117, 128-131, 137-140. 
142, 147, 150, 152, 156-157, 173-176, 
182, 187-191, L94 L95, 201, 211-212 
Geology, descriptive, by districts, account 
50-212 
Georges Water, ocation of 19 
Gila mine, description of 117 
Gilbert, G. K., fossils determined by 165 
reconnaissance by 15 
Girty, G. II., fossils determined by... 11"). 122.204 
Girvanella, occurrence of 57,66, 120 
Gold Bar mine, rocks near 178 
Cold Center, location of 25 
water near 131 
rocks near 178 
Gold Crater, ore deposits at 46, 113, 139-140 
rocks at 1 3q 
Gold Crest Mining Company, property of. 189 L99 
Gold Flat, description of 98-99 
Gold Mountain, economic geology of L87 L9j 
geology of 28, 30-32. 183-187 
st met ure of 187 
topography of 182 188 
Gold Mountain mining district, develop- 
ment in 187 
