562 



INDEX. 



Page. 



Mumuuth K'dgo, prospecting near 242 



Mitmiuotli Lode 68 



Murgai'ita u<!lii-a8C(!D8iB 432 



Mnr<j;arit<'lla flcxiHtriata 463 



Miirnh, Prof. O. C 37,188 



Marvin.', Mr. A. U., cited 75, KjO 



Maximilian, Prince, exploration by 6 



Meek, Prof. F. B 81, 112, l.'Jl, 188 



exi)loration bj' 9 



Meek and Hayden's Cretaceous section 171 



Meretrix dowcyi 410 



tenuis 462 



Meridian distances 544 



Metamorphism of Potsdam sandstone 280, 285 



sedimentary rocks by contact with 



igneous 219 



Altea in granito 70 



quartzito 471-474 



Mica-schist 477,480,481 



and slates 470 



biotito in 477 



brown mica in 477 



crystalline quartz in 477 



cyanitc in 478 



hornblende in 477, 478 



magnesia mica in 481 



muscovite in 477 



orthoclaso in 478 



white mica in 477, 480 



Mica-slate 476,480,481 



argillaceous 477 



fibrous groundmass of 479 



Microlitos in quartzite 473 



sanidin 507 



Microscopic petrography 471 



Mineral, colorless 514 



Minerals in quartzito 472 



M ineral Resources 15, 225 



Report on the 4, 21 



Mining district. Castle Creek 261 



French Creek 226 



Spring Creek 238 



Miocene lake 219 



Mispickel 61 



Missouri region, exploration of 5 



Modiola formosa 361 



Monoclinal fi('xures, duplication of 119, 139, 142 



ridges 32, 175, 177 



Monocotyledones 536 



Monotis carta 354 



hawni 355 



speluncaria 355 



tennicostatus 354 



Morton, Dr. S. G 6,7 



cited 7 



Myacites (Pleuromya) nebrascensis 461 



subcompressus 368 



subellipticus 461 



Mytilites i)roblematicu.s 389 



Mytilus pertenuis 362 



whitei 360 



Natica ambigua 430 



concinua 430 



moreauensia 430 



Page. 



Natica paludinseformis 431 



Katrolito ; 516 



Nautilus dokayi 439 



var. montanasnsis 439 



Nooira longirostris 376 



morcauensis ? 420 



ventricosa 420 



Ncphelite in phonolito 492, 503 



Nowberrj-, Dr. C. G 19 



Dr.J.S 106 



cited 131,149,108 



Nicollet, J. C, exploration by 7 



Nositc in phonolite 493, 504 



Nucuta evansi 409 



planimarginata 406 



subequilatera 407 



subnasuta 462 



ventricosa 462 



Nuculana bisulcata 407 



equilateralis 408 



subequilatera 408 



Obella polita 339 



nana 340 



Obolus appolinus ! 339 



? pectenoides 338 



Obsidian 483 



Odontobasis constricta 463 



ventricosa 463 



Old Woman Fork 29,30 



Oligoptychia concinna 463 



Opacite 484 



Opal in rhyolite 522 



Organization for field work 19 



Orthoclase in quartzito 472,473 



section of banded 525 



Ostrea congesta 462 



englemani 460 



strigilecula 348 



Owen, Dr. D. Dale 8 



cited 97 



Oxytoma mucronata 357 



munsteri 357 



nebrascana 385 



PachythiErus evansi 413 



Palseochorda prima 331 



PaliEophycus occidentalis 101, 104, 200, 332 



tubularis 332 



sp. undetermined 333 



Paleozoic formations 41 



Parks, scenery of 227 



Pasture lands 317 



Patrick, Mr. W. F 19 



cited 121,162,163 



Pay gravel, charact«rof 237,244,265 



position of 236,237,242,255 



Peale, Dr.A.C 96,150 



cited 112 



PearUte 483, 485 



Pecten bellistriata 3,'>1 



haUi 383 



newberryi 350 



rigida 383 



Pcntacrinit<>8 astcriscus 345 



Pentacrinus asteriscus 151, 345 



