INDEX. 



5.59 



Tngc. 



Crotacooiis fossils 185 



in H«ll(> Fourcho Valley 182 



of tlio Black Hills 43,175 



Far West 169 



on Beaver Creek 33, 178 



Frcncli Cnek 181 



Miune Katta Crook 181 



Old Woman Fork 31 



Kapiil Creek 181 



Koil Canon Creek 178, 182 



South Fork of the Cheycnno 33 



I'lateau 1"7 



section of Meek and Haydon 171 



topography of the 176 



nppor beds of the 180 



Crow Peak 103,128,194 



[141, 142] 506 



Cmziana 334 



Cryptojramia 537 



Cryptorhytis fusiformis 421 



Crystalline quartz in mica-schist 477 



qtiartzite 472 



quartzito 474,475 



CucuUica iibrosa 405 



inomata 359 



shumardi 405 



Culbertson, Dr. T. A., oxploration by 9 



Custer, General G. A., cited 16 



exploration by 15 



CusterGulch 237 



Custer Peak 192 



[134] 501 



[137] 503 



Custer Peak, rock of 281 



Cyanitc in mica-schist 478 



quartzite 472 



Cyclina ? circularis • 417 



Cymella Mceki 418 



Cyprina humilis 414 



Cypricardia 364 



Cytherea deweyi 416 



missouriana 416 



tenuis 462 



Dacito 483 



Dakota Indians 4 



Dakota sandstone, ideal restoration of 205 



topography of 177 



Dawson, Mr. G. M., cited 150,191 



Dr. J.W., cited 98 



Dcadwood Creek 280 



prospecting on 282 



Decoloration of dark clays 189 



Deer Mountains 194 



[125] 499 



Dentalum fragile 438 



gracilo 438 



Dione deweyi 416 



missouriana 416 



nebrascensis 462 



i tenuis 462 



Devonian formation, absence of 42 



Dews 301 



Diplodouta subundata 411 



Displacement producing the Black Hills, form of . . . 204, 209 



Dodge, Col. R. I 19 



cited 137 



on climate 303 



Page. 



Dodge, Col. U.I. , ou timber 324 



Dosinia Jura.ssica 373 



mis.souriana ? 410 



Dosiniopsis deweyi 410 



nebrascensis 402 



Double inclusion of magnetite and calcite in bio- 

 tile .'520 



Drainage of the Black Hills 2 



system of the Black Hills 212,215,218 



Drepanocheilus nebrascensis 429 



Ehrenberg. Dr., cited 97 



Elk Creek, topography of 272 



Emmons, Professor 80 



Endocostea 402 



alveata 403 



impreasa 403 



sulcata 403,404 



typica 403 



Eozoon canadense 46 



Epidote 54 



Erosion, epochs of 296 



Eruptive (see Igneous) 



Eumicrotis curta .354 



orbiculata 350 



Evans, Dr. John, exploration by 8,9 



Examination of thin sections 472, 477, 494 



Fanny Peak 111,119,140 



Farming lands 314 



Fasciolaria (Cryptorhytis) contorta 422 



fusiformis 421 



(Piestocheilus) culbertsoni 423 



Feldspar from granites 70, 525 



microlites 491 



porphyry 484 



Felsite-porphyry 527 



Ferrite 484 



Flora of Black Hills, Jenney on 315, 32o 



Fluid inclusions in rhyolite 487 



Fluid like structure 498, 513 



Fosar ? nebracensis 430 



Fossil plants from Abiquiu 149 



MiildloPark 150 



near Moqni villages 149, 168 



Fossil wood, ore bearing 149 



Fossils, Carboniferous 110, 130 



Cretaceous 185, 3*>3 



Jurassic 162, 165, 166, 168, 344 



of the Potsdam 87,107 



Tertiary 7,26 



Primordial 331 



why not found in Red Beds 138 



Foothills 32,177,204 



section at Camp Jenney 34 



placers of 289 



prospecting in 291 



Fort Union group on South Fork of Cheyenne 31 



French Creek [40] 478 



[208J 472 



[215] 475 



described 229 



district, topography of 226 



prospecting in 230 



mining district 226 



mouth of [208] 474 



[211] 475 



Fruits, wild 315 



Fucoides duples 332 



