414 



Hall, James, Pogonip fauna 190 



Hamburg limestone, description 39 



dolomite 40 



thickness -40 



AVbitePine 192 



Kidge, age of 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 



OlenelUis shale 46 



Hillebrand. W, F., analysis of coal 98 



ores 313 



Hoosac fault 14, 15 



bifurcation of 16 



displacement 17 



Mountain 112 



andesitic pearlite and dacite of 368 



horDblende-raica-andesite of 365 



Hornblende-audesite and pyroxene-andesite. relative 



agt^of 251 



Hornblende in andesitic pearlite and dacite 369 



granite 337, 338 



granite-porphyry 341, 345 



horn blend e-mica-andesite 365 



pyroxene-andeaite 358, 363 



Hornblende-andesite along Hoosac fault 244 



cutting Hoosac Mountain 113 



description of 233 



Dry Lake Valley 141 



Horn blende-mica -an desite 364 



apatite in 367 



biotite in 366 



feldspar in 364 



hornblende in 365 



magnetite in 367 



microfltrutture 367 



quartz in 366 



zircon in 367 



Hornitos Cone 253 



tutis 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 



Pag& 



Igneous rocks, Sierra Valley 131 



Int lusions in feldspar 355, 362, 365, 375 



luterstratitied conglomerate in Upper Coal-measures. . 164 



Intrusive dikes 243, 247 



Prospect Ridge 103 



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



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



J. 



Jackson fault 51, lUO. 300.303 



Jones Canyon, Devonian limestone 126 



Judd, J. W., propylite of Scotland 279 



Juniperua occidentalis 4 



Kauab section 207 



Kaolinization along Hamburg Ridge 310 



of rhyolite 310 



Kawaoh Range 232 



age of lavas 232 



King, Clai'ence, geological position of rhyolite 249 



origin of igneous rocks 277 



post- Jurassic upheaval 9 



Quaternary history 33 



relation of basalt to rhyolitL- 285 



Kinnicut, Robert, Devonian in British America 73 



Labradorite iu pyrosem-andesitc 1. 240 



Lacustrine deposits - 32 



Lamellibrancbiates iu Carboniferous 87,169 



Devonian 72 



Lamoureux (.'anyon 134 



section easi of 67 



fault 134 



Lateral compression at Eureka 210 



Lavas, age of 231 



along faults - 29 



lines of displacement 243 



Pinto fault 149 



Carbon Ridge 172 



common source of 267 



decomposition along tisaures 235 



diflerentiation of 267, 269. 287. 289, 290 



distribution of 231 



encircling County Peak and Silverado mountain 



uplifts 246 



foUoN^-ing lines of least resistance 245 



in Grays Canyon 245 



Great Basin, succession of 288 



Sierra Valley 245 



magmas of eruption 2,53 



mode of occurrence 243, 249, 289 



of intermediate composition 283. 288 



sequence of 253. 276. 283, 290 



transitions in 255 



welling out along fissure.s 244 



Lead in Kuby Hill ore 312 



product 7 



Limestone, Richmond Mountain 167 



underlying Clifl' 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 



