INDEX. 



559 



Pago. 



Cretaceous fossils 185 



in Belle Fourche Valley 182 



of the Black Hills 43,175 



Tar West 169 



on Beaver Creek 33, 178 



French Creek 181 



Minne Katta Creek 181 



Old Woman Fork 31 



Eapid Creek 181 



Bed Canon Creek 178, 182 



South Fork of the C hey enne 33 



Plateau 177 



section of Meek and Hayden 171 



topography of the 176 



upper beds of the 180 



Crow Peak 103, 128, 194 



1141, 142] 506 



Cruziana 334 



Cryptogamia 537 



Cryptorhy tis fusiformis 421 



Crystalline quartz in mica-schist 477 



quartzite 472 



quartzite 474, 475 



Cucullaea fibrosa 405 



inornata 359 



shumardi 405 



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



Custer, General G-. A., cited 16 



exploration by ... , 15 



Custer Gulch 237 



Custer Peak 192 



[134] 501 



[137] .' 503 



Custer Peak, rock of 281 



Cyanite in mica-schist 478 



quartzite 472 



Cyclina? circularis 417 



Cymelia Meeki 418 



Cy prina humilis 414 



Cypricardia 364 



Cytherea deweyi 416 



missouriana 416 



tenuis 462 



Dacite 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 



Dead-wood Creek 280 



prospecting on 282 



Decoloration of dark clays 189 



Deer Mountains 194 



[125] 499 



Dentalum fragile 438 



gracile 438 



Dione deweyi 416 



missouriana 416 



nebrascensis 462 



? tenuis 462 



Devonian formation, absence of 42 



Dews 301 



Diplodonta subundata 411 



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



Dodge, Col. P. I 19 



cited 137 



on climate 303 



Page. 



Dodge, Col. B. I., on timber 324 



Dosinia Jurassica 373 



missouriana ? 416 



Dosiniopsis deweyi 416 



nebrascensis 462 



Double inclusion of magnetite and calcite in Mo- 

 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 86 



Endocostea 402 



alveata 403 



impressa 403 



sulcata 403, 404 



typica 403 



Eozoon canadense 46 



Epidote 54 



Erosion, epochs of 296 



Eruptive (see Igneous) 



Eumicrotis curta 354 



orbiculata 356 



Evans, Dr. John, exploration by 8, 9 



Examination of thin sections 472, 477, 494 



Fanny Peak 111,119,140 



Farming lands 314 



Fasciolaria (Cryptorhy tis) 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 



Middle Park 150 



near Moqui villages 149, 168 



Fossil wood, ore bearing 149 



Fossils, Carboniferous 110, 130 



Cretaceous 185, 383 



Jurassic 162, 165, 166, 168, 344 



of the Potsdam 87, 107 



Tertiary 7, 26 



Primordial 331 



why not found in Bed 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 



[208] 472 



[215] 475 



described - 229 



district, topography of 226 



prospecting in 230 



mining district 226 



mouth of [208] 474 



[211] 475 



Fruits, wild 315 



Fueoides duplex 332 



