INDEX. 



561 



Pago. 



Icthj-osarcolithus coraloida 462 



Ideal lestoratiou uf Ihu Black ITills uplift 205 



Idoneaica shumardi 405 



Igneous displac'ciueut.s, relation tu main displacements 



of tUo Black mils 208 



masses of the Black Hills 44 



matter did not overflow 197 



j)eaks 189 



and the Kcd Bed limestone 133, 191 



relation of, to I'otsdiun 103, 200 



rooks 190,281 



ago of the 219 



Inclusions in sanidin 489 



• Indians, Dakota 4 



Inoccnuuus altns 391 



alveatua 402 



balchii 393 



barabina 398 



confertim-annulatns 396 



convexaa 393, 404 



cripsii .398,404 



var. barabini 398 



var. sulcatus 404 



cuneatus 398 



cUioti 392 



fragilis 390 



gibbus 398 



impressus 402 



mortoni 396 



ne'. rascensis 393 



perplexus 302 



problematicus ? 389 



simpsoul . 395 



proximus 395,396 



var. subcircularis 396 



sagensis 393 



var. nebrascensis 393 



sulcatus 403 



sublevis 393 



tenuilineatus 400 



venuxemi . , 396 



var. ? 398 



In.socts, noxious 320 



Interlaminated veins 228 



In y an Kara 197 



[147] 508 



[149] 508 



[152] 511 



nortbcastof [150] , 510 



north peat of [151] 510 



[160] 514 



■west of [157] 512 



Iron Ledge, Box Elder Crock [85] 481 



Iron oro 57, 60 



on Beaver Creek 295 



Box Elder Creek 274 



Isotropic behavior of garnets 422, 474 



mineral 517 



Jasper 473 



Jasper, Hill [92] 473 



Jonney, Mr. AValterP 161,163 



cited 188 



on climato 301 



mineral resources 225 



Joe Peak 159 



Jones, Prof.P. B., cited 86 



36 B H 



Page. 



Jones, Capt. W. A., exploration by ,14, 554 



Jura about Bear Butte 190 



and lied Beds, separation of 131, 153 



discovery in the Far West 151 



in Belle Fourcho Valley 153, 1C4 



of Europe 151,167 



the in ck Hills 43,1.52 



the Northwest 152 



on Amphibious Creek 158 



Box Elder Creek 159 



Red CaQon Creek 156 



Kcd WaterCreck ICO 



variation in thickness of the l.'J2, 106 



Jurassic fossils 162, 165, 166, 168, 344 



Kensler, Mr. Touissant 292 



King, Mr. Clarence 150 



cited 75 



on the Archsean 48 



Lands, agricultural 314 



grazing 317 



Latitudes 546 



Laurcntian formation 46 



Leda bisulcata 407 



evansi 409 



Leidy, Dr. Joseph 8, 9, 1 3, 37, 188 



Lciopistba (Cj-meUa) meeki 418 



Lesquerenx, Prof. Leo 112 



Lewis and Clarke, exploration by 6 



Limestone, glauconitic 475 



Limonitc on Box Elder Creek 275 



Lingula antiqua 335 



brevirostra 346 



pinnafoi-mis 335 



<?)polita 339 



Lingulepis cuneolis 336 



dakotcnsis 336 



plnnaforrais 329, 335, 336, 337 



pcrattenuata 337 



prima 460 



Lioplacodus vetumus 461 



Little Missouri Buttes 202 



[167,168] 515 



[169] 510 



Logan, Sir William 47 



LogancUus centralis 341 



Longitudes 544 



Loss in acid 486 



Lower Kapid Creek [71] 480 



Ludlow, Col. William, exploration by 15 



on climate 307 



Lucina occidentalis 409 



var. ventricosa 410 



(Diplodonta ?) subnndata 411 



Bubondata 411 



ventricosa 410 



Lnnatia concinna 430 



moreauensis 430 



McGillycuddy, Dr. V. T 19 



Majmetic variations 547 



Magnetite border in biotite 503 



inbiotitc 502 



quartzito 472 



rhyolitc 488 



stibmetallic luster of 480 



Mallory, Mr. Thomas U., cited 279,282 



Mammoth ledge 562 



