INDEX. 



565 



Pago. 



Scaphitea warroui 444 



var. wyomiDgensis 446 



wyomingcnsis 446 



Schist included in gnmito 72, 229 



Schists, compoaitiou aud structure of 228 



i.f tho Black Uills 51, 50, 64 



Spring Crook district 241 



strike and dip of tho 55 



topography of tUo 55 



Scolithua linearis .". 88, 104, 200, 334 



Section, descriptive. Carboniferous and Potsdam, on 



SlateCreek 90 



in vaUc.\ of Beaver Creek 33, 178, 182 



on Amjiliibioiis Creek 122 



Box Elder Creek 126 



CastleCreek 120 



lower Itapid Creek 125 



Minne Katta Creek 121 



Spearfisli Creek 128 



Cretaceous and Tertiary at mouth of Rapid Crook . . 185 



at forks of tho Cheyenne 184 



near Bear Lodge 180 



on French Creek 181 



north bend of Bellt! Fourche 180, 183 



Ked Caiion Creek 182 



South Fork of Cheyenne 33 



general, of Black Hills 40 



Carboniferous in Black Hills 108 



Cretaceous by Meek and Hayden 121 



Ked Beds in Black Hills 131 



Tertiary by Meek and Hayden 187 



Jura about Bear Butto 196 



and Cretaceous on Amphibious Creek 158 



in lied water VaUey 161, 102, 163 



near Bear Lodge 165 



Camp Jenney 155, 156 



Spearfish Creek 160, 161 



Sun Dance Hills 145 



on Red Caiion Creek 157 



Potsdam on Box Elder Creek 91 



lower French Creek 90 



liapid Creek 85,94 



Spring Creek 88 



Red Beds and Jura near Bear Lodge 148 



on Amphibious Creek 142 



Red Canon Creek 140 



near Rapid Creek 142 



Tertiary aud Cretaceous near Old Woman Butte 30 



on Old Woman Fork 31 



Serpentine 482 



Seipula sp. ? 461 



Sheridan, General P. H., cited 17 



Shumard, Dr 9 



Siderite on Beaver Creek 295 



Silica determinations 526 



percentage of rhyolito 485 



trachyte 489 



Silurian formation headwaters of Niobrara 28 



Silurian. See Potsdam. 



Simpson, Col. J. H., exploration by 13 



Sink holes in gypsum 146 



Sinking of creeks 123 



Sioux expedition 10 



reaervation 4 



Page. 



Slates 478 



the, of the Black Hills 56,64 



strike and dip of 60 



topography of 58 



Slickensides 73 



on granite 228 



Smet, Father de 16 



Snow-fall, amount of 302 



SoUs 313 



Solarium flexistrialum 463 



Solenoceras 456 



Solidula ( Actaionina ?) snbelliptica 463 



South Fork of the Cheyenne, cafion of 177 



Spearfish Creek, prospecting on 278 



topography of 277 



Sphairiola morcauensis 415 



obliquata 415 



transversa 415 



warrenana 462 



Spheruli to 483 



Siiherulitos 485, 499 



Spring Creek, volume of 254 



Spring Creek district, prospecting in 240 



topogi-aphy of 238 



Spring Creek mining district 238 



Springs, mineral 295 



temperature of 303, 312 



Stand-offBar 251 



Staurot ide 54, 260 



Stevenson, Dr. J. J., cited .75, 149 



Stockade, the 17 



French Creek [1] 477 



[13] 477 



[17] 472 



[24] 478 



Stock-raising, future importance of 317 



Storms, thunder 310 



Strt^ams, volume of 312 



Structure and ago of the Black Hills 203 



fluid-like 513 



Sun Dance Hills 145,197 



Superimposed drainage 216 



Surcula contorta 422 



Syncyclonema rigida 383 



Synopsis of the rocks of the Black Hills 40 



Tancredia iequilateralis 460 



bulbosa 370 



corbuliformis 370 



? iuomata 368 



postica 371 



warrenana 372 



Tectura occidentalis 463 



Tellina occidentalis 409 



scitula 463 



(Peronaea?) scitula 463 



Terebratula helena 462 



Tenaces on Rapid Creek 291 



Terry Peak 103,193 



[101] 494 



[206] 472 



[214] 524 



barometric observations on 549 



height of 540 



ridgeeaatof [113] 496 



