INDEX, 



679 



Lavas and underground water, 



627 

 LeConte, J , 474. 549 

 Lendofelic, 456 

 Lenfelic, 456 

 Lepidolite, 464 

 Leucite, 464 

 Leucophyre, 412, 453 

 Levees, 



breaking of, 188 



miniature, 182 



natural, 188 



on alluvial cones, 182 

 Level of no stress, 561 

 Life, 638-672 



atmospheric effects of, 638- 

 644 



chemical work of, 638-646 



climatic effects of, 643 



effect on rock decomposition, 

 130, 644 



geologic effects of, 639 



inorganic rocks due to, 646 



influenced by environment, 

 666 



man's influence on, 650 



protection against erosion, 

 130, 644 

 Life and carbon dioxide, 640, 



642, 643 

 Lightning, effects of, 52 

 Lignite, 426, 470 

 Limburgite, 470 

 Lime carbonate, deposition of, 



375, 376 

 Limonite, 425 

 Limestone. 378, 424, 434 



origin of, 378, 654, 655 



stratificacion of, 487 

 Limestone-forming animals, 



660-662 



plants. 654, 655 

 Limestone sinks, 227, 231 

 Lindgren, W., 474 

 Liparase , 459 

 Liparite, 470 

 Lisbon earthquake. 535 

 Lithosphere, 9-19 



crust of, 13 



irregularities of, 10 



reUef of, 11 



size and shape of, 9 



surface mantle of, 12 

 Littoral ciurrents, 342 

 Littoral deposits, 368, 369 379 

 Littoral zone, 369 

 Liverworts, geologic contribu- 

 tion of, 656 

 Livingstone, D., 49 

 Load (of streams), 177-179 

 Loess, 23, 470 

 Lodge moraine, 301 

 Loop (along shore). 357, 363 

 Lunar craters 598 

 Lunn A. C. 552. 565. 566. 567 



572 

 Lycopods, geologic work of 657 

 Lydekker R. (and Nicholson, 



A.) 658 

 Lyell. Sir Charles 649 



Mackenzie River, delLa, 202 

 Magma, nature of, 401 

 Magnesite, 464 

 Magnesium salts m sea, 377 

 Magnetic nodules in sea, 381 

 Magnetite, 464 



Malay peninsula tin ores of, 478 

 Malaspina glacier, 254 

 MaUet, R. , 322. 537, 538, 628, 636 

 Mammoth Cave, 227 

 Mammoth hot springs, 654 

 Manganiferous deposits, 384 

 Mantle rock, 12, 422 

 Marble, 447, 471 

 Marcasite, 464 



Marine deposits, 355-363, 370- 

 386 



chemical, 367, 375, 383 



deep-sea, 368, 378-386 



extra-terrestrial, 381 



littoral, 368, 369 



mechanical, 369, 380 



organic, 375 



shallow-water, 369-378 



table of, 380 

 Marine life, distribution of, 328 

 Marl, 471 (see also Greensand 

 marl and Shell marl) 



formed by plants, 655 



greensand (see Greensand 

 marl) 

 Martinique, 605 

 Martite, 464 

 Mason. W. P., 107 

 Mass action, 478, 484, 554 

 Mature drainage, 86 

 Mature streams, 



characteristics of, 86 

 Mauna Loa, 605, 606, 624 

 McConnell, J. C, 313, 322, 323, 



549 

 McGee, W. J., 59, 524 

 Meander belt, 



relation to width of stream, 

 193 

 Meanders, 



flood-plain, 190 



intrenched, 164 



of the Meuse, 164 



of the Moselle, 164 



of the Seine, 164 

 Mean sphere level, 548 

 Medial moraine, 266, 297 

 MedUcott, H. B., 203 

 Medicinal springs, 235 

 Melaphyres, 412, 431, 453, 471 

 Menaccanite, 464 

 Mendelejeff, D. (and Moissan, 



H.), 646 

 Mental element, material effects 



of, 649 

 Merrill, G. P., 35, in, 221 

 Mesas 142 

 Mesophytes, 667 

 Meta-diabase, 471 

 Meta-igneous rock 471 

 Metamorphic rocks. 17 

 Metamorphism. 427. 433, 440, 

 449 



by heat 446 



Metamorphism, by lateral pres- 

 sure, 448 



deep-seated, 449 

 Meteorites, 4 



number of, 381 

 Meuse. meanders of, 164 

 Mica, 400, 464 

 Mica schists. 448 

 Microchne, 400, 464 

 MicroUtes, 407, 471 

 Microgranite, 471 

 Migration of dunes, 33 

 Millstone, 471 



Mihie, J., 533. 537, 538, 583 

 (and Gray, T.), 578 (and 

 Burton), 636 

 Mineral matter in sea, 324-326 



amount of, 325 

 Minerals, 



felspathic, 400, 462 



ferromagnesian, 400, 460 



formation of, 397, 612 



of igneous rocks, 399 



list of, 460-467 

 Mineral springs, 235 

 Minette, 415, 471 

 Mining geology, i 

 Minnehaha Falls, 137 

 Mirlic rocks, 458 

 Mississippi River, 



delta, 197, 202 



depth of channel, 171 



flood-plain, 194 



floods of, 188 



levees of, 188 



material in solution in, 108 



sadiment carried by, 106 

 Mississippi flood-plain, 194 



lakes of, 192 

 Missouri River, scour-and-fiU of, 



195 

 Mitic rocks, 456 

 Moissan, H., 646 

 MoUusca, geologic contribution 



of, 662 

 Molluscoidea, geologic contribu- 

 tion of, 662 

 Molten interior, lava from, 624 

 Molten magmas, nature of, 401 

 Molten reservoirs, lavas from, 



624 

 Monadnocks, 145 

 MonocUnal shifting, 127 

 Monocline, 504 

 Monzonite, 471 

 Moon, 3, 598 

 Moraines, 



dump, 301 



ground, 302 



lateral, 266, 302 



lodge, 301 



medial, 266, 297 



moUuscan shells in, 297 



push 301 



surface 266 



terminal, 266, 301 



types : 301 

 Moselle River intrenchment me- 

 anders 164 

 Moseley H. 322 



