INDEX 



699 



Lowville limestone, 368 

 Loxonema hamiltoniae, 419 



l.-ila, 397 



Luciiui aquiana, 573 

 Lunatia marylandica, 573 

 Lung-fishes, 422 

 Lycopods, 458, 461 

 Lyell, Sir Charles, cited, 676 

 Lyginodendron oldhamia, 463 

 Lyrodesma cincinnatiensis, 381 

 Lytoceras batesii, 531 



Maclurea logani, 381 

 Macrocheilus blairi, 433 

 Magmatic segregation, 42 

 Magmatic waters, 42 

 Magnesium salts, 196 

 Magnetite, 255, 256 

 Magnolia pseudoacuminata, 547 

 Malaspina (ilader, 129 

 Mammals, Cretaceous, 550 



Eocene, 565, 566 



Miocene, 591 



Oligocene, 578 



Pliocene, 608 



Quaternary, 666 



Triassic, 496 

 Mammoth cave, 39 

 Man, antiquity of, 670-676 



a geological agent, 682 



relics of, 670 

 Manganic nodules, 197 

 Manlius limestone, 388 

 Mantle rock, 7 

 Maquoketa shale, 369 

 Marble, 292 



Marcellus shale, 402, 404 

 Marine deposits, 652 

 Marine Quaternary fossils, 665 

 Marl, 202 



Marquette iron ore, 333 

 Mass action, 47 

 Mastodon americanus, 667 

 Matawan formation, 534 

 Matthew, W. D., cited, 575, 593, 594 

 Matteo Tepee, 94 

 Mature topography, 71 



valleys, 71 



Maturity of shoreline, 182 

 Mauch Chunk formation, 426, 427 

 Mauna Loa, 231, 234 

 McConnell, R. G., cited, 542 

 McGee, W. J., cited, 600, 603, 645, 676 

 Meanders of streams, 113, 114 

 Meanders, entrenched, 102 



Medial moraines, 136, 155, 156, 159 

 Medlicottia capci, 481 

 Medina sandstone, 388 

 Meekella striatocostata, 469 

 Meekoceras, 500 

 Meekospira peracuta, 469 

 Melaphyres, 262 

 Men of Spy, 611 

 Merced River, fan of, no 

 Merced series, 604, 607 

 Mesabi iron ore, 332, 333 

 Mesas, 93 

 Mesohippus, 578 

 Mesozoic era, 484 

 Mesozoic, close of, 541, 542 

 Metamorphic rocks, 9, 10 

 Metamorphism, 285 

 Metamorphism, dynamic, 291, 293 



thermal, 228, 291 

 Metamorphism of Archean rock, 318 



of Proterozoic rocks, 339 

 Meteorites, 3 



Meteoritic hypotheses, 300, 302 

 Mica, 253, 255 

 Mica schist, 292, 296 

 Michclinia lenticularis, 414 

 Michigan, copper in, 337 

 Middle Cambrian, 345, 346 

 Middle Huronian, 331 

 Migration of dunes, 19 

 Migration of life, in glacial period, 



664 



Millstone Grit, 441, 456 

 Milne, J., cited, 206 

 Minerals, formation of, 252 

 Minnehaha Falls, 90 

 Minnesota, Proterozoic rocks of, 340 

 Minor movements, 219 

 Miocene climate, 591, 598 

 Miocene, close of, 587 



faunas, provincial, 596 



igneous rocks, 587 



life, 591 



mammals, 591 



period, 581-598 



system, distribution of, 582 

 Mi-sissippi, delta of, 115 

 Mississippi River, erosion by, 84 

 Mississippian fossils, 437 



life, 432 

 Mississippian period, 426-440 



climate of, 432 



close of, 430 

 Mississippian plants, 440 



system, 428, 430 



