558 



INDEX. 



Page. 



Baculiteus asperus 464 



compressus 463 



grandis 464 



ovatus 464 



Bad Lands of White River 8, 36 



Bailey, Mr. T. "W\, cited 97 



Barometric work 547 



Bear Butte 195 



Bear Butte Creek [144] 507 



prospecting on 279, 282 



topography of 279 



Bear Lodge 191,200 



Bear Lodge 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 



Belle Fourche Valley, structure of 213 



Big Canon of the Cheyenne 177 



Biotite 519 



in mica-schist 481 



rhyolite 488 



trachyte 490 



magnetite in 502 



horder in 503 



Bird's-eye view 204 



BlackButte 143 



[139] 503 



[140] 505 



rock of 281 



Black Hills, age of the 214 



an epitome of the Bocky Mountains 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. W. C, cited 555 



Botany of the Black Hills 531 



Bowlder formation on the Chugwater, &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 



Buccinum ? constrictum 463 



Building stone 295 



Bulla speciosa 437 



subcylindrica 437 



Calcite 475 



in trachyte 519 



Callista deweyi 416 



var. rohusta 462 



(Dosiniopsis) nebrascensis 462 



( Aphrodina) tenuis 462 



Camp Jenney 140 



longitude of 554 



Camp Terry, prospecting near 281 



Camptonectes bellistriatus 351 



extenuatus 353 



pertenuis 353 



Page. 



Camptonectes platissiformis 354 



stygius 354 



Caprinella coraloidea 462 



Capulus occiden talis 463 



Carboniferous about Crow Peak 128 



"Warren Peaks 129 



and Potsdam, separation of 109 



Bed Beds, separation of 110, 113, 131 



exposures in detail 120 



formation, headwaters of the Niobrara.. 28 



fossils 130 



ideal restoration of 204 



in Bear Lodge range 116 



of the Black Hills 42 



Far West 42 



Bocky Mountains 108 



on Amphibious Creek 121 



Battle Creek 123 



Box Elder Creek 126 



Castle Creek 120 



French Creek 123 



Minne Katta Creek 121 



Old Woman Fork 29 



Rapid Creek.. 124 



Spearfish Creek 128 



Plateau 115, 11 7, 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 



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



Cavities in quartzite 473, 474 



Cement in quartzite 472, 473 



Chalcedony in rhyolite 522, 523 



Cheyenne 22 



Cheyenne Biver of Post-Miocene origin 217 



Chugwater Biver, the 23 



Cinulia (Oligoptychia) concinna ■ 463 



Clay-slate 477,481 



Climate 301 



Closteriscus tenuilineatus 463 



Color of Red Beds, origin of 138 



Comstook, 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 



Corhula moreauensis 420 



Crassatella evansi 413 



subquadrata 412 



Creeks, sinking of 123 



Crepicephalus (Bathyurus 1) angulatus 342 



centrale 341 



planus 343 



quadrans 343 



Cretaceous and Tertiary, separation of 185 



clays, decoloration of 189 



exposures in detail 178 



formerly continuous over Black Hills 186 



