882 



INDEX. 



Provo and Silver Creek divide, trachyte 



Canon 



cascades 



River, tiidymite in tracbyte 



Valley, PormoCarbouiferous 



Pnrple Hills, tracbyte 



Pyramid Lake, altitude of 



analysis of water 



Lake La Hontan terraces 



described 



Pyrargerite 



Pyrites associated with graphite in Archasan. 



in Archoean 



d.abase 



diorite 



trachyte 



Upper Coal-Measurea 



Page. 

 319 

 347 

 348 

 317 

 349 

 833 

 82-2 

 834 

 H23 

 823 

 731 

 IG 

 108 

 C92 

 684 

 123 

 285 



620 

 695, 697 

 160 

 168 

 170 

 59i 

 017 

 532 

 £84 

 333 

 103 

 771 

 478 

 577 

 844 

 580 

 401 

 64 

 93 

 791 



Quartz (dihexahedral) in dacite 



rhyoUte 



hornblende in 



Quartziferous trachyte described 



Steves Kidge 



Quartz in andesito 



basalt 



trachyte. East Humboldt Kange 



Havallah Kange 



Quartzite in Archasan, East Humboldt Kange 



Medicine Bow Kange 



Trnckee Miocene 



Quartz-porphyry, Castle Peak, "Washoe Mountains.. 



propylite, Cortez Peak, Cortez Range 



Mullen's Gap, Virginia Range 



Pappoose Peak, Cortez Range 



Quaternary gravels, Ogdeu Caiion, Wahsatch Range. 



Great Plains 



Laramie Plains 



Quiun's River, width of 



Rabbit Ears Peak, North Park 126 



Hole Springs described 786 



Raft River Mountains 428 



granite 429 



Railroad Caiion, Diamond Range, basalt 549 



Ranunculus cy mbalaria 7*7 



Raven's ITost Peak, Piuou Range 552 



Ravcnswood Peak, Shoshone Range, Carboniferous . . 638 



diorite 638 



granite 637 



porphyry 6U8 



rhyolito 640 



Rawung'sPeak 100 



Areh£ean 160 



DaJiota conglomerate 159,103 



Fox Hill Cretaceous 164 



hornblende microlites in quartz ... 160 



Jurassic 163 



PalKozoic, thickness of 161 



Red hematite 161 



Triassio 159,162,163 



Red Beds 28,33,77,79,81,82,92,115,149,150, 



163, 163, 174, 184, 200, 254, 259, 231, 283, 284, 392, 299, 302 



Red CiusEK ARCH.a;AN liODY 269 



Red Crook Archaean rocks 202, 227, 268, 269, 270 



Pago. 



Red Creek Archaean rocks, fault in 268, 273 



hornblende schist 270 



section of 2C9 



staurolite in 270 



tourmaline in :. 270 



Vallej', Colorado Cretaceous 271 



Vermillion Creek Eocene 226 



Red Desert described 211 



Redding Springs, terrace lines 473 



Red Dome, basalt 426 



Fork, Colorado Cretaceous, coal in 314 



gneiss. Camel Peak 140, 175 



jasper conglomerate. Medicine Bow Range 106 



Valley, description 45 



Reed and Benson Mine, fossils from 364 



Reese River Canon, rhyolite 639 



Reese River to Osobb Valley 036 



Valley, composition of soil 635 



rhyolite 634 



Region between Bear axd Weber Rivers 330 



EAST OF the Uinta Range 277 



Region north of Fremont's Pass 533 



Granite Mountain 708 



the Humboldt River 590 



Salt Lake 420 



of the Carlin Peaks 587 



Cluuo Hii.LS 584 



Mud Lakes 775 



south of Fremont's Pass 528 



Granite Mountain 693 



Salt Lake 443 



WEST of Pyramid Lake 844 



Reynold's Pass, Aqui Mountains, 'Wahsatch lime- 

 stone - 457 



Rhamnus Goldianus 147 



Rhodes's Spur, Uinta Range, Upper Coal-Measures. . 313 



Rhyolite, Aloha Peak, Pah-tson Range 780 



Antoine's Canon, Virginia Range 829 



Battle Mountains 671 



Bayless Canon, Montezuma Range 763 



Berkshire Caiion, Virginia Range 841,842 



Bingham Caiion, Oquirrh Mouutoins 441 



Black Caiion, Montezuma Range 757 



Black Rock Mountains 795 



Boone Creek, Toyabe Range 630 



breaking through granite-porphyry 853 



trachyte 701 



breccia, Mopung Hills 735 



Mullen's Gap, Virginia Range 847 



Sou Spring Hills, Pah-Ute Range. 697 



Utah Hill, Black Rock Mountains. 795 



Carlin Peaks, Cortez Range 589 



Clan Alpine Canon, Augusta Mountains .. 650 



CluroHilla 585 



Cold Spiiu^s, Forman Mountains 797 



coloring matter of 698, 84G 



columnar structure 761, 796, 800 



Cortez Peak regiou, Cortez Range 579 



Dacie Ceiion, Fish Creek Mountains 664 



Desert Butte, Utah 430 



Gap, Nevada 51M 



diabase fragments in 613 



dihey ahedral quartz in 695, 697 



Emigrant Road, Cortez Range 5S9 



erosion of 685 



