408 



Page- 

 Basalt, quartz iu 390, 393 



relative .age 276 



Ba.salt Peak, basalt 386 



Basalti.^ Klass ■■ 259 



Beckfr, G. F., on oliviiio in basalt 257 



prnjiylito 279 



pyroxeiie-amlcsitcs in California 261 



Bennett Spring-, section 187 



Bitnrcalion ut Hoosae, fault 16 



Biotitc in andesitic pearlito and (la<'ite 370 



granite .- 337, 338 



granite-porphyry 340 



hornblende-niica-anilesite. -.- , 366 



pyroxene-andesite ^ 359, 363 



rhyolite -. 376 



Bismuth on Prospect Ridge 313 



Blair. Andrew A., analysis of gi'anit«-porpbyry 228 



Bold Bluff, description 160 



Bouuey, T. Ci., secondary enlargement of quartz 347, 



liritlsh America. Paleozoic rocks of 208 



Browns Canyon 137 



Bullion product ■- 6 



Bunwen. Kobert. origin of lavas 273. 275 



C. 



Calcareous beds at Eureka 178 



shale, base of Hamburg limestone -14 



Cambrian and Silurian Rocks S4-W2 



species, comiuingliiig of 48, 50 



fauna 41-47 



on Roundtop Mountain 112 



iu Btitish America 208 



rocks. Prospect Ridge 34 



sections, comparisona of 117 



Carbon Ridge 172 



andesitic pearlite and dacite south of - . . 368 



and Spring Hill group 28, 165 



structure 30 



Carboniferous at Quartz Peak 197 



block, depressed body 28 



coal - - 95 



fauna at Quartz Peak . 199 



movement in 203 



Eocks 84-98 



species, commingling of 88 



thickness 13, 84 



Caribou Hill 21 



Eureka quartzite 54 



Pogouip fauna 53 



Cailsbad twins of plagioclase, optical properties of. ...S50, 353 



Carson Lake, alt itude 1 



Castle Mountain .... 23 



Silurian limestoiu-- .. 121 



Century Peak Kidge . . 152 



Cercocarpus laedifolius 4, 24 



Chakcdipuy in andesite 234 



(liartcr Tunnel 35, 106 



C'bazy fauua 50 



Chemical composition of granite-porphyry 226, 228 



lavas 290 



Chemung fossils at Eureka 71, 80, 89 



Classificatiou of lavas 233, 290 



Claudet, Fred., analysis of ore 312 



Cbtr Hilla ". ; 164 



and Richmond Mountain compared 155 



plant remains in 'Whito Pine shale 165 



e-andesite 239, 361 



Page. 



Coal in Carboniferous 95, i81 



Coal-me.asure fauna overlying coal 98 



Combs Peak, section across . 65 



structure 135 



thickness of Devonian 78 



Conical Hill 168 



Copper iu Kuby Hill ore 312 



Corals in Century Peak Ridge 152 



Cortez Range 181 



County Peak region 147 



section 67 



across 68. 78 



Crater Cone 253 



basalt of 386 



Cross, Whitman, allanitean accessory mineral 263 



on hypersthene-andesite 241 



Cross-section in Phosnix Mine 306 



Curtis, J. S., course of Ruby Hill fault 303 



minerals on Ruby Hill 311 



silver-lead depos'its 292. 301 



D. 



Bacite 368,373 



at Dry Lake 237 



South Hill 237 



mineral cotuposition 236 



physical features 236 



relation to rhyolite 250 



Dana, J. D., cited 390 



Dawson, SirJ. 'William, on Devonian plants 69 



Descriptive Geology 99-174 



Devon Peak, structure 138 



Devonian and Carboniferous rocks 63-98 



County Peak group • 26 



at Jones Canyon 125 



Lone Mountain 74 



White Pine -...-- 192 



Yahoo Canyon 83 



c()rals in Yahoo Canyon 139 



distribution of 203, 206 



fauua 70 



Atrypa Peak 76, 125 



Brush Peak 76 



Combs Peak 76 



Mt. Argyle 193 



Newark Mountain 156 



QuartzPeak 199 



Rescue Hill 80 



Woodpeckers Peak 78 



in British America 209 



Devonian, Lower Carboniferous, and Coal-measure spe- 

 cies, commingling of 87 



plant remains 69 



rocks 62-84 



thickness 13, 63 



Diamond Mountains 3.26,28 



Peak, iiltitude 4 



quartzite at -Anchor Peak 146 



The Gate 142, 145 



description 85 



evidence of age 85 



thickness 13, 85 



structure 157 



thickness of beds 158 



Range, west slope 163 



Differentiation of lavas 287, 269, 287. 289, 290 



Diller, J.&., quartz iu basalt 263 



