INDEX 



965 



Maury, Miss C. J., 289, 804 

 McConnel, J. C., 279, 287, 359 

 McConnell, R. G., 411, 755 

 McGee, W J, 728, 829, 835, 864, 890, 



930 



Medial moraines, 234, 242, 259, 262 

 Medicinal springs, 213 

 Medicine Bow Mountains, 472 

 Medina sandstone, 537 

 Mediterranean region, in Permian 



time, 696 



Medlicottia copei, 675 

 Medusae, Cambrian, 499 

 Meek, F. B., 705 

 Meekella stratocostata, 658 

 Meekoceras, 700 

 Meekospira peracuta, 658 

 Megalonyx, 920 

 Megatherium, 920 

 Melaphyre, 60, 85 

 Menominee iron ore, 459 

 Merced River, fan of, 181 

 Merriam, J. C., 701, 778, 798 

 Merrill, F. J. H., 884 

 Merrill, G. P., 98, 201 

 Mesabi iron ore, 459 

 Mesnard quartzite, 460 

 Mesohippus, 802 

 Mesozoic era, 435, 678 

 Meta-diabase, 85 

 Meta-igneous rock, 85 

 Metamorphic rocks, 12, 14, 42, 85, 



400 



Metamorphism, 42, 51 

 aqueous, 43 

 by pressure, 53 

 of Proterozoic, 469 

 Meta-sedimentary rock, 85 

 Meteorites, 4 



number of, 328 

 Meteoric dust, 328 

 Meteoric hypotheses of earth's origin, 



416, 419 

 Methane, 635 

 Mexico, Comanchean of, 732 



Jurassic in, 709 

 Mica, 21, 26, 27, 79 

 Michelinia lenticularis, 576 

 Michigamme slate, 460 

 Michigan coal field, 625 

 Microcline, 79 

 Microgranite, 85 

 Microlites, 85 

 Microsaurs, 653 

 Middle Cambrian, 477, 483 



Middle Oslite, 709 

 Mid-Silurian fauna, 547 

 Midwayan formation, 774 

 Migration of life and glaciation, 914 

 Milky quartz, 80 

 Millstone, 85 

 Millstone grit, 620, 641 

 Milne, J., 338, 393 

 Mineral matter in sea, 289 



in solution, 213 

 Minerals, formation of, 24 



list of, 74 

 Minette, 85 

 Mining geology, 2 

 Miocene period, 702, 805 



climate of, 818, 827 



close of, 813, 817 



disturbances of Pacific coast, 808 



faunas, 819 



floras, 818 



igneous activity, 812 

 Miocene system, of Africa, 817 



of Arctic regions, 818 

 Asia, 817 



Atlantic coast, 805 

 Australia, 817 

 Europe, 815 

 Gulf coast, 807 

 New Zealand, 818 

 Pacific coast, 807 

 South America, 817 



thickness of in California, 809 

 Mississippi River, preglacial course 



of, 876 



Mississippian a distinct system, 602 

 Mississippian period, 596-619 



climate of, 606 



duration of, 606 



gypsum, 606 



life of, 606 



of the west, 600 



close of, 602, 605 



plants, 619 



salt, 606 



thickness of, 601 

 Missouri series, 621 



lead and zinc in, 517 



lead in, 518 



zinc in, 597 



Mitra potomacensis, 796 

 Modiolus alabamensis, 797 



dalli, 825 

 Mohawkian, 509 

 Mollusks, Cambrian, 498 



Cretaceous, 741, 770 



