INDEX. 



295 



Page. 



Tonopah Mining Co., claims of, development of '26-27 



shaft of, view of 120 



Tonopah rhyolite-dacite, age of 43, 51 



alteration in 41-42 



analysis of 57,58,60,64,148 



character of 41-13, 51, 59-l, 101 



contact of, veins on 194-200 



hornblende in 2 



occurrence of 30,41,51,127 



section of, figure showing 41 



veins of 22,96-101 



age of 99-100 



character of 97-99 



circulating waters in 100-101 



diagram showing 98 



limits of 99-100 



Topography, character of 25 



origin of 23,109,113-114 



production of, by faults 74-75 



relation of rocks to 113-114 



Transportation, difflcultieH of 28 



V. 



Valley View fault, effects of 137-139 



location of 133-134 



Valley View mine, shaft of, depth of 106 



shaft of, sections on and near, figures showing . . 122, 134 



workings of 132-134 



Valley View veins, correlation of 137-139 



cross veins in 129-130 



location of 129 



onMizpah Hill 129-132 



ores of, character of 132 



origin of 130-131 



oxidation in 90-91 



oxidized ore of. analysis of 92 



sections of 128,133-138 



structure in 130-131 



underground system of ; 132-139 



in Silver Top mine 136-187 



in Stone Cabin mine 135-137 



Valley View vein system, description of 129-1C4 



relations of Fraction vein and 140, 1S7 



relations of Wandering Boy vein and 149-152, 187 



section of, figure showing 151 



Van Hise, C. R.. on orthoclase 229 



Vein robbers, occurrence and character of 130 



Veins, mineral, age of 71-72 



branching of 119 



character of .. 22, 83-101, 122-123 



formation of 104 



relations of alteration to 251-252 



fractures in 119-122 



in the earlier andesite 83-90 



mines and prospects on, descriptions of 115-191 



material of, paragenesis of 104 



of Ararat Mountain : 101-104 



of the Tonopah rhyolite-dacite period 96-101 



origin of 84-85,102,104,253-262 



outcrops of, map showing 116 



Vivipara couesi, occurrence of 67 



Volcanic epoch, continuance of S2 



Page. 



Volcanoes, accumulations from 23 



character of 260-261 



origin of 21 



W. 



Wandering Boy fault, discovery of 79 



Fraction fault and, age of 163 



location of 153 



occurrence and character of 152-156, 161-163, 184 



section showing 154, 155, 156 



Wandering Boy mine, faults in 152-156, 161-162 



faults in , figure showing 172 



ore in 163 



outcrops near, figure showing 153 



oxidation in 91 



plan of 172 



relations of 186 



section of 154, 155. 156 



shafts of. depth of 106 



Valley View veins in 130, 149-152 



veins of : 1W2-163 



plan showing 172 



Wandering Boy veins, description of 149-164 



dip of H9-151 



Fraction vein and, relations of 162-163, 187 



ores of 163-164 



outcrops of 152 



Valley View vein and, relations of 149-152 



Wash apron, view of 112 



Washoe, Nev., andesite from, analyses of 219, 244 



dacite and rhyolite from 60 



analyses of 58, 65 



Water, supply of 28, 107 



Water, underground, depth to 106-107 



occurrence of 23, 105-107 



origin of 107-108 



zones of, 'occurrence of. explanation of 107 



Water, descending, oxidation by 90 



sulphides deposited by % 



Water, hot, ascending, alteration by 207-252 



alteration by, variation in 210-211 



changes in 235-238 



channels of 83 



effect of 22,114,227.234-235 



mineral composition of 22- 



23, 104. 210-211. 227. 235-238, 250, 253, 2SN-25H 



argument from 258-260 



mineralization by 22-23,*% 99-101, 210-211 



origin of 253-256 



Water power, availability of 28 



Weed, W. H., on Boulder Hot Springs 211 



on silver sulphides 95 



West End fault, location of 184 



rocks along .' 184 



West End mine, gas in 94 



relations of 186-187 



rocks in 35.50; 185-188 



shaft of, depth of 106,185 



workings of, description of 184-188 



White Mountain Range, water power in 28 



Wind, erosion by 110-112 



Wingfield tunnel, location of 191 



rocks in 101,104,191-192 



Wood, occurrence of 28 



o 



