558 



INDEX, 



Page. 



BacuUt«U8 aspcnis 464 



coiupressiis 463 



grandis 464 



ovatua 464 



Bad Lauds of White Eiver 8,36 



Bailey, Mr. T. TV., cited 97 



Barometric work 547 



Bear Butte 195 



Bear Biitte Creek [144] 807 



prospecting on 279, 282 



topographj' of 279 



Bear Lodge 191,200 



BearLodjie Butte [159-162] 513 



Bear Lodge district, prospecting in .286,287 



topography of 283 



Bear Lodge range 179 



Belemnites densus 381 



Belle Fourche. valley of the ; 147, 164, 177 



Bello Fourche Valley, structure of 213 



Big Canon of the Cheyenne 177 



Biotite 519 



in mica-schist 481 



rhyolite 488 



trachjte 490 



magnetite in 502 



border in 503 



Bird's-eye view 204 



Black Butte 143 



[139] 503 



[140] 505 



rock of 281 



Black Hills, age of the 214 



an epitome of the Kocky Moantains 3, 38 



defined 1,39 



drainage system of the 212, 215, 218 



form of displacement 209 



general structure of the 39, 203 



summary of history of 220 



Bond. Prof. AV. C, cited 555 



Botany of the Black Hills 531 



Bowlder formation on the Chngwater, &c 25 



Box Elder Creek [81] 481 



[97] 482 



[200] 473 



[201] 472,473 



iron ore on 274,275,295 



prospecting on 276 



topography of 272 



Breccia, rhyolitic 516 



Buccinnm ? constrictum 463 



Building stone 295 



ISuUa speciosa .• 437 



subcylindrica 437 



Calcito 475 



in trachyte 519 



Callista deweyi 416 



var. robusta 462 



(Dosiniopsis) nebrascensis 462 



(Aphrodina) tenuis 462 



Camp Jenney 140 



longitude of 554 



Camp Terry, prospecting near 281 



Camptonectes bellistriatus 351 



estenuatns 353 



pertenuis 353 



Pago. 



Camptonectes platissiformiii 354 



sty gius 354 



Caprinella coraloidea 462 



Capulus occidentalis 463 



Carboniferous about Crow Peak 128 



Warren Peaks 129 



and Potsdam, separation of 109 



lU-d Beds, separation of 110, 113, 131 



exposun-s in detail 120 



formation, head waters of the Xiobrara . . 28 



fossils 130 



ideal restoration of 204 



in Bear Lodge range 116 



of the Black Hills 42 



Far West 42 



Kocky Mountains 108 



on Amphibious Creek 121 



BattleCreek 123 



Box Elder Creek 126 



Castle Creek 120 



French Creek 123 



Minne Katta Creek 121 



Old Woman Fork 29 



Rapid Creek 124 



Spcarfish Creek 128 



Plateau 115, U7, 204 



subdivisions of the 107 



topography of the 114 



Castle Creek mining district 261 



Potsdam sandstone on 262 



prospecting on 264 



topography of 261, 263 



CasweU, John H., cited 190, 194, 203 



Cavities in quartrite 473,474 



Cement in quart zite 472,473 



Chalcedony in rhyoUte 522,523 



Cheyenne 22 



Cheyenne River of Post-Miocene origin 217 



Chngwater Eiver, the 23 



Cinulia (Oligoptychia) concinna 463 



Clay-slate 477, 481 



Climate 301 



Closteriscus tenuilineatus 463 



Color of Kcd Beds, origin of 138 



Comstock, Prof. T. B 166 



cited 24 



exploration by 14 



Conformity of Carboniferous and Red Beds 130 



granite and schists 227 



Jura and Cretaceous 167 



Conrad, Mr 7 



Consequent and inconsequent drainage 215, 218 



Cora, Mr. George W., cited 279 



Corbula moreauensis 420 



CrassatcUa evansi 413 



subquadrata 412 



Creeks, sinking of 123 



Crepicephalus (Bathy urus 1) angulatns 342 



ccntrale 341 



planus 343 



quadrans 343 



Cretaceous and Tertiary, separation of 185 



clays, decoloration of 189 



exposures in detail 178 



formerly continnoas over Black Hills 186 



