700 



INDEX 



Missouri, lead and zinc in, 374, 427 



zinc in, 427 

 Missouri River, scour and fill by, 



"3 



Missounan series, 443 

 Mitra potomacensis, 573 

 Modiolus alabamensis, 573 

 Modiolus dalli, 595 

 Mohawkian epoch, 368 

 Molluscs, Cambrian, 361 



Cretaceous, 553-4 



Devonian, 418 



Eocene, 573 



Jurassic, 509 



Mississippian, 438 



Ordovician, 379 



Pennsylvanian, 469 



Silurian, 397 



Triassic, 498 

 Monadnock. 94, 104 

 Monmouth formation, 534 

 Monocline, 276 

 Monoclinal structure, 278 

 Monongahela series, 443 

 Monopteria longispina, 469 

 Monotremes, 571 

 Montana series, 535, 537 

 Monterey formation, 583, 587, 607 

 Monument Creek formation, 539 

 Moon, mass of, 3 

 Moonstone, 254 

 Moraines on ice, 136 

 Moraines, types of, 159 

 Morrison beds, 504, 515, 519, 525 

 Mosasaurians, 551 

 Moulins, 138 

 Mount Mitchell, 104 

 Mountain-folding, 220 

 Mountain limestone, 431 

 Movements of crust, extent of, 223, 



224 



Movements of sea- water, 1 73 

 Movements, recent, 677 

 Muensteroceras oweni, 433 

 Murray, Sir John, cited, 56, 189, 197, 



199 



Muscovite, 255 

 Musk-ox, 666, 679 

 Myacites humboldtensis, 500 

 Myalina permiana, 481 



recurvirostris, 469 

 Myriapods, 467 

 Myrica longa, 547 

 Myopharia alta, 500 

 Mytilus whitei, 512 



Narragansett Bay coal measures, 445 



Narrows, 92 



Nassa marylandica, 597 



Naticopsis altonensis, 469 



Natural bridges, 101 



Natural bridge of Virginia, 102 



Natural levees, 112 



Nautilus meekanus, 554 



Neanderthal man, 611 



Nebular hypothesis, 300, 307 



earth under, 307 



objections to, 301, 308, 309 

 Neocene, 556 

 Neolithic age, 670 

 Neumayria henryi, 512 

 Neptunella intertextus, 554 

 Neuropteris angustifolia, 460 



auriculata, 460 



valida, 478 



vermicularis, 460 

 Neuropters, 467 

 Neve, 126 



Newark series, 484, 486, 487, 488 

 Newfoundland ice sheet, 615 

 New River, 105 

 New Scotland beds, 402 

 Niagara Falls, 90, 91 

 Niagara formation, 389, 390 

 Niagara gorge, age of, 646, 647 

 Niagara River, 79 

 Niagaran coral reefs, 391 



epoch, 388 



series, 389 



Nickel in Huronian rocks, 334, 337 

 Nile delta. 116 

 Nipissing Lakes, 639 

 Nodosaria bacillum, 572 



communis, 572 

 Noeggerathiopsis hislop, 478 

 Non-clastic sediments, 267 

 North America, elevation of, 84 

 Northern Interior coal-field, 444 

 Nova Scotia coal-field, 445 

 Nucleocrinus verneuili, 416 

 Nyctosaurus gracilis, 550 

 Nucula ovula, 574 



storrsi, 531 



Obsidian, 249, 258, 262 

 Ocean, age of, 168 



area of, 5 



beginning of, 311 



depth of, 4 



work of, 167-200 

 Ocean basins, 5, 168 



