414 



INDEX. 



H. 



Page, 



Hall, James, Pogonlp fauna 190 



Hamburg limestone, description 39 



dolomite 40 



thickness 40 



WhitePine 192 



Ridge, ageof Ill 



description 110 



shale, description 41 



thickness 41 



Hamilton fossils at Eureka 71, 89 



Hart, Edward, analysis of basalt 264 



rhyolite 264 



Havalah Range 9 



Highland Range 186,189,194 



Olenellus shale 46 



Hillebrand, W. F., analysis of coal 98 



ores 313 



Hoosac fault 1*, 15 



bifurcation of 16 



displacement 17 



Mountain 112 



andesitic pearlite and dacite of 368 



hornblende-mica-andesite of 365 



Hornblende-andesite and pyroxene-andesite, relative 



ageof 251 



Hornblende in andesitic pearlite and dacite 369 



granite 337, 338 



granite-porphyry 341, 345 



hornblende-mica-andesite 365 



pyroxene-andesite 358, 363 



Hornblende-andesite along Hoosac fault 244 



cutting Hoosac Mountain 1 13 



description of. 233 



Dry Lake Valley 141 



Hornblende-mica-andesite 364 



apatite in 367 



biotite in 366 



feldsparin 364 



hornblende in: 365 



magnetite in 367 



microstrueture 367 



quartz in 366 



zirconin 367 



HornitosCone 253 



tufl's and pumices '. . . 147 



Howell, E. E., Olenellus shale at Pioche 186 



Humboldt Lake, altitude 1 



Hypersthene and augite, isolation of 242 



in andesitic-pearlite and dacite 370 



basalt 387, 394 



dacite 236 



pearlite... 235 



pyroxene-andesite 356, 362 



wanting in normal basalts 257 



I. 



Iddings, J. P., on granite-porphyry 225 



lime-soda feldspars 241 



metamorphosed sandstones 144 



Modoc section 65 



petrographical features of pearlite.. 236 



quartz in basalt 263 



structural peculiarities in ground- 

 mass 256 



zircon crystals 262 



report on petrography 233 



Page- 

 Igneous rocks. Sierra Valley 131 



Inclusions in feldspar 355, 362, 365, 375 



Interstratified conglomerate in Upper Coal-measures. . 164 



Intrusive dikes 243,247 



Prospect Ridge 103 



Irving, R.D., secondary enlargement of quartz 347 



Isbister, A. K., Devonian in Mackenzie river valley . . 73 



J. 



Jackson fault 51.100.300,303 



Jones Canyon, Devonian limestone 126 



Judd, J. W., propylite of Scotland 279 



Juniperus occidentals 4 



K. 



Kuu.ii. section 207 



Kaolinization along Hamburg Ridge 310 



of rhyolite 310 



Kawsoh Range 232 



age of lavas 232 



King, Clarence, geological position of rhyolite 249 



origin of igneous rocks 277 



post-Jurassic upheaval 9 



Quaternary history 33 



relation of basalt to rhyolitt- 285 



Kinuicut, Robert, Devonian in British America 73 



L. 



Labrauorite in pyroxeiie-andesite 240 



Lacustrine deposits 32 



Lamellibranchiatas in Carboniferous 87, 169 



Devonian 72 



Lamoureux Canyon 134 



section east of 67 



fault 134 



Lateral compression at Eureka 210 



Lavas, age of '. 231 



along faults 29 



lines of displacement 243 



Pinto fault 149 



CarbonRidge 172 



common source of 267 



decomposition along fissures 235 



differentiation of 267, 289. 287. 289, 290 



distribution of 231 



ciicircliiii; County Peak and Silverado mountain 



uplifts 246 



following lines of least resistance 245 



in Grays Canyon 245 



Great Basin, succession of 288 



Sierra Valley 245 



magmas of eruption 253 



mode of occurrence 243,249.289 



of intermediate composition 283. 288 



sequence of 25:1, 276, 283, 290 



transitions in 255 



welling out along fissures 244 



Lead in Ruby Hill ore 312 



product 7 



Limestone, Richmond Mountain 167 



underlying Cliff Hills 155 



Liquid carbonic acid in quartzite 55 



Lone Mountain, beds at base of Combs Peak 24 



description 60 



Nevada fauna 62 



limestone, description 57 



fauna 59 



