GOG 



INDEX. 



Middle Devonian, ii, 424 



geographic changes during, ii, 

 430 



in the northwest, ii, 429 

 Middle Ordovician fauna, ii, 



365 

 Middle Silurian fauna, ii, 399 



foreign relations, ii, 409 



Middle Triassic faunas, iii, 54 



Midwayan formation, iii, 199 



Migration of climatic zones in 



Pleistocene, iii, 486 



of duies, i, 33 



of life in Pleistocene, iii, 485 



of plants, rate of, in glaciated 

 area, iii, 533 

 Miliola, iii, 241 

 Milky Way, ii, 53 

 Millsap division, ii, 563 



limestone, ii, 506 

 Millstone grit, ii, 539, 562; iii, 



560 

 Milne, J., cited, i, 533, 537, 538, 

 583; (and Burton), 636; 

 (and Gray), 578 

 Mineral matter in sea, i, 324-326 



amount of, i, 325 

 Minerals, felspathic, i, 400, 462 



formation of, i, 397, 612 



of igneous rocks, i, 399 



list of, i, 460-467 

 Mineral springs, i, 235 

 Minette, i, 415, 47i 

 Mining geology, i, 1 

 Minnehaha Falls, i, 137 

 Minnekahta limestone, iii, 68, 



565, 566 

 Minnelusa sandstone, iii, 68, 



567 

 Minnesota, Archean of, ii, 150 

 Minnewaste limestone, iii, 566 

 Miocene amphibians, iii, 290 



anoplotheres, iii, 284 



anthrocotheres, iii, 284 



birds, iii, 290 



bison, iii, 286 



caenotheres, iii, 284 



camels, iii, 286 



carnivores, iii, 284, 289 



cephalopods, iii, 294 



cetaceans, iii, 294 



Chesapeake, fauna, iii, 291 



corals, iii, 294 



crustaceans, iii, 294 



deer, iii, 285 



echinoids, iii, 294 



elotheres, iii, 284 



fauna, iii, 283 



foraminifers, iii, 294 



gastropods, iii, 293, 294 



grasses, iii, 283 



land animals, iii, 283 



land plants, iii, 282 



lophtodonts, iii, 284 



marsupials, iii, 290 



opossums, iii, 290 



oreodons, iii, 284 



pelecypods, iii, 292, 295 

 Miocene Period, iii, 258 



climate, iii, 261, 281 



Miocene Period, climate, Green- 

 land, iii, 281 



close of, iti, 273, 279 



crustal movements, in Europe, 

 iii, 280 



deformation during, iii, 273 



igneous activity, iii, 270 



life, iii, 282 



marine life, iii, 290 

 Miocene perissodactyls, iii, 284 



primates, iii, 289 



proboscidians, iii, 284 



protocerases, iii, 284 



rays, iii, 294 



reptiles, iii, 290 



rodents, iii, 284 



ruminants, iii, 285 



scaphopods, iii, 294 



sharks, iii, 294 

 Miocene System, Atlantic coast, 

 Hi, 258 



Arctic latitudes, iii, 281 



Asia, iii, 280 



auriferous gravels of Califor- 

 nia, iii, 265, 274, 299 



Australia, iii, 280 



British Columbia, iii, 270 



California, oil in, iii, 263 



Europe, iii, 276 



Gulf coast, iii, 261 



map, iii, 259 



Martha's Vineyard, iii, 260 



New Zealand, iii, 281 



Pacific cast, iii, 262 



petroleum, iii, 279 



South America, iii, 281 



Texas, iii, 262 



Texas, oil in, iii, 262 



thickness of, iii, 266 

 Miocene tapirs, iii, 289 



Truckee formation, iii, 266 



vermes, iii, 294 



xiphodonts, iii, 284 

 Miolabis, iii, 286 

 Mirlic rocks, i, 458 

 Mississippi river, delta, i, 197, 

 202 



depth of channel, i, 171 



flood-plain, i, 194 

 lakes of, i, 192 



floods of, i, 188 



levees of, i, 188 



material in solution in, i, 108 



sediment carried by, i, 106 

 Mississippian amphibia, ii, 527 



fauna of Great Basin, ii, 527 



fishes, ii, 534 



labyrinthodonts, ii, 538 



land life, ii, 537 



life of, ii, 518 

 Mississippian Period, ii, 496, 507 



climate of, ii, 518 



igneous activity of, ii, 507 

 Mississippian sharks, ii, 535 



system, subdivisions of, ii, 500 



system, thickness of, ii, 510 



west of Great Plains, ii, 505 

 Missouri, lead in, ii, 337 

 Missouri river, scour-and-fill of, 

 i, 195 



Missouri series, ii, 542, 561 ; iii, 



558 

 Missouri, zinc in, ii, 337 

 Mitchell limestone, iii, 556 

 Mitic rocks, i. 456 

 Mitra potomacensis, iii, 243 

 Mitrocystis mitra, ii, 359 

 Moccasin limestone, ii, 316 

 Modes of deformation under 

 planetesimal hypothesis, ii, 

 123 

 Modified hypothesis of earth's 

 history, stages under, ii, 90 

 Modiola, iii, 91 

 Modiolops ; s arguta, ii, 354 

 Mod olus alabamensis, iii, 243 



dalli, iii, 292 

 Mceritherium, iii, 284 

 Mohawkian system, ii, 310 

 Moissan, H., cited, i, 646 

 Mojave formation, iii, 210 

 Molas formation, iii, 572 

 Molasse formation, iii, 250, 276 

 Molengraaf, G. A. F., cited, ii, 



636; iii, 172, 320 

 Molgoph'.s, ii, 608 

 Molluscoidea (see Brachiopods) 



Cambrian, ii, 284 



geologic contribution of, i, 662 

 Mollusks, Carboniferous, ii, 615 



Comanchean, iii, 134 



Cretaceous, iii, 187 



Devonian, ii, 454, 459, 465, 

 473 



Eocene, iii, 243 



Genevieve, ii, 533 



Geologic contributions of, i, 

 662 



Jurassic, iii, 93 



Miocene, iii, 292, 294, 295 



Mississippian, ii, 521 , 527, 528; 

 533 



Oligocene, iii, 257 



Ordovician, ii, 352 



Oriskany, ii, 459 



Permian, ii, 653 



Pleistocene, iii, 494 



Pliocene, iii, 326 



Silurian, ii, 405 



Triassic, iii, 53 

 Molten eon, ii, 90 



interior, lava from, i, 624 



magmas, nature of, i, 401 



reservoirs, lavas from, i, 624 



zone, middle, ii, 8 

 Moment of momentum of 



planets, ii, n 

 Mona schist, ii, 149, 150 

 Monadnocks, i, 145 

 Monarch formation, iii, 568 

 Monkeys, Pliocene, iii, 322 

 Monmcuth formation, iii, 140. 



189 

 Monoclinal shifting, i, 127 

 Monocline, i, 504 

 Monocotyledons, Cretaceous, iii. 

 173 



introduction of, iii 175 

 Monongahela series, ii, 542, 557. 

 558, 560; iii, 554 



