1066 



INDEX. 



Mars, density of, 16 ; oblique feat- 

 ure-lines on, 395, 396* 



Marsh gas, 124, 523 



Marsh ore, 71§, 344, 465. See also 

 Bog ore 



Marshall group (grit and sand- 

 stone), 688 



Marshall Islands, 395 



Marsilea, TIS ; quadrifolia, 436* 



Marsileaceae, 519 



Marsipobranchs, 418§ 



Marsupials, 53, 54, 55, 415§. See 

 Mammals 



Marsupiocrinus caelatus, 567 



Martha's Vineyard, Cretaceous of, 

 822, 837, 838; Tertiary of, 881, 

 891 ; upturning of beds, 934, 1022 



Maryland, mean height of, 23 ; 

 Cambrian in, 465, 466, 467 



Mascarene Islands, 737 



Massachusetts, 23 (height), 85, 453, 

 496 ; coal-beds, 684, 646, 657 ; 

 iron ore beds, 127 ; kaolin beds, 

 184 ; marbles. 524, 580, 531 ; Cam- 

 brian in, 310, 466, 467, 471, 475; 

 Taconie, 491, 517, 524, 528, 580, 

 531 ; Trenton, 495 ; Triassic, 740, 

 741, 742, 750, 753, 800, 802 



— Bay, 444, 461, 536 

 Massawipi Lake, 558 

 Massillon coal, 657 



Massive limestone, 76, 78§ ; quartz- 

 yte, 82§ ; rocks, 76, 78§ ; struc- 

 ture, 92§ 



Mastodon, 919, 927, 1000, 1011; 

 Americanus, 998* ; Arvernensis, 

 927 ; angustidens, 927 ; Borsoni, 

 927 ; Floridanus, 1001 ; longiros- 

 tris, 927 ; mirificus, 911, 912 ; 

 proavus, 911 ; tapiroides, 927 



Mastodons, 141, 402, 911 (first), 924, 

 925 



Mastodonsaurus giganteus, 772* ; 

 Jasgeri, 774 



Mastogloia, 164*, 165 



Matheria variabilis, 478* 



Matinal of Rogers, 490, 494, 728 



Matterhorn, 189, 287 



Matthews' Landing clays, 885, 888 



Mauch Chunk group, 410, 634, 686, 

 644, 728 



Maudunian group, 925 



Maui, 150, 172 ; map of, 179*, 182 ; 

 cone of, 270 



Maumee River, 947 



Mauritius, volcanoes of, 277, 296, 

 1019 



Mauvaises terres, 894 



May-fly, 419, 600 



May Hill sandstone, 518, 568, 566, 

 569 



Mayencian group, 926 



Mazonia Acadica, 691 ; "Woodlana, 

 691 



MazzaUna pyrula, 916 



Meadville group, 638 



Medina epoch, 535, 570 



— sandstone, 638, 542 

 Mediterranean Cretaceous basin, 



857, 859, 872, 873; earthquakes 

 of, 374 ; region, 769, 791, 793, 861 



— Sea, 20, 21, 22, 34, 45 ; tempera- 



ture of, 49 ; salinity of, 121 ; vol- 

 canoes of, 295 

 Medlicottia Copei, 685*, 686 

 MedusiB, 55, 418, 419, 429*, 430§. 



479, 480, 482 

 Medusites, 482 

 Meekella Shumardana, 685 ; striato- 



costata, 690 

 Meekoceras aplanatum, 757 

 Megadactylus, 753 ; polyzelus, 758 

 Megalaspis, 521 

 Megalichthys, 621, 692, 702 

 Megalocnus rodens, 1001 

 Megalodon triqueter, 774 

 Megalomus Canadensis, 548*, 551 

 Megalonyx, 912, 919, 1000, 1001, 



1003 ; Jeffersonii, 1000, 1001* ; 



Leidyi, 1001 

 Megalopterls, 689 ; fasciculata, 645 

 Megalosaurs, 786, 828 

 Megalosaurus, 765, 766, 790 ; Bredai, 



864 ; Bucklandi, 785 (time range) ; 



Dunkeri, 863 

 Megambonia, 562 

 Megaphyton, 699; McLayi, 669*, 



689 ; protuberans, 645 

 Megaptera longimana, 988 

 Megathentomum, 679 ; pustulatum, 



691 

 Megatherida?, 1000 

 Megatherium, 1000, 1002, 1004; 



Cuvieri, 1002* ; mirabile, 1000 

 Megistocrinus, 590, 602 

 Meionite, 66§ 

 Meizoseismic curve, 876§ 

 Melania costata, 926 ; fasciata, 926 ; 



Inguinata, 925 ; turritissima, 926 

 Melantho subsolida, 966 

 Melaphyre, 87§ 



Meleagris altus, 1002 ; celer, 1002 

 Melocrinus, 550, 562, 577; Clarki, 



621 ; nobilissimus, 560 

 Melongena crassicornuta, 916 

 Melonites niultiporus, 641*, 646 

 Melosira distans, 163, 164* ; granu- 



lata, 168, 164* ; decussata, 163, 



164*; Marchica, 163, 164*; sul- 

 cata, 437*, 894* 

 Melville Island, 659, 689 

 Memphremagog (Lake), 531, 680, 



591, 630 

 Menaccanite, 70§ 

 Menacodon rarus, 767* 

 Menchikoff Island, 145*, 150 

 Mendip Hills, 695 

 Mendoza earthquake, 349 

 Menevian group, 481 

 Menilite, 920 



Meniscoessus conquistus, 852 

 Meniscotherium, 917 

 Meniscus limestone, 548, 550 

 Menobranchus lateralis, 682 

 Menocephalus, 603 

 Menominee, 446 

 Menurids, 64 

 Merced group, 884, 892 

 Mercer coal-beds, 656 

 Mercian, 681, 738 

 Mercury, density of planet, 16 

 Mercury mines of California, 385 

 Meretrlx, 916 

 Meridian series, 728 



Merista, 642 ; plebeia, 625, 628 



Meristella, 562, 579, 642 ; angusti- 

 frons, 567 ; didynia, 567 ; lievis, 

 500*, 562; nasuta, 590, 691, 692; 

 subundata, 520 ; sulcata, 567, 

 560* ; tumida, 668 



Meristina nitida, 648*, 551 



Merjelen (Lake), 238 



Merocrinus, 516 ; typus, 614 



Merosthenic, 717§, 796, 870, 871 



Merychyus, 919 



Merycochoerus, 918, 919 



Merycopotaraus, 927 



Mesa, 185§, 186*, 800 



Mesabi Range, 446 



Mesalia Claibornensis, 897*, 916; 

 obruta, 916 ; vetusta, 916 



Mesnard, 446 



Mesodectes, 918 



Mesodevonian, 576§ 



Mesodon albolabris, 966 ; diastema- 

 ticus, 836; Dumblei, 886; pro- 

 fundus, 966 



Mesohippus. 908, 912, 913*, 918 



Mesonacis Vermontana, 478* 



Mesonyx, 918 



Mesoreodon, 918 



Mesosaurus, 706 ; tumidus, 687, 

 688* 



Mesothyra Neptuni, 600 ; Oceani, 

 600, 615* 



Mesozoic time, 788 



Messinian group, 927 



Metacoceras cavatiforme, 690 ; 

 dubium, 691 ; Hayi, 691 ; incon- 

 spicuum, 691 ; Walcotti, 691 



Metadiabase, 86§ 



Metadoxides, 482 



Metagene, 880§ 



Metalophodon, 918 



Metals heavier than iron not erup- 

 tive, 876; native, 881, 882 



Metamorphic rocks, 76§, 82 



and igneous, relations of, 826, 



827 



Metamorphism, 809 ; dynamical, 

 began in the ArchEeozoic era, 441 ; 

 heat in, 311, 821-826; local, 311, 

 312-314; metachemic, 314§, 818- 

 321 ; moisture in, 311-312 ; pai-a- 

 morphic, 314§, 317-318 ; regional, 

 811, 313, 314-815 ; statical, began 

 in the Lithic era, 440 ; without 

 heat, 327 



— in Archffian, 448, 450, 451, 453 



Metamynodon, 918 



Metapedia Lake, 533 



Metasomatic metamorphism, 314§ 



Meteoric stones, 11, 876 



Meteorites, 876, 486 



Metia Island, 188, 151 (height), 350 



Metoptoma, 482, 514, 516 ; alta, 501 ; 

 dubia, 508 



Meudon chalk, 866 ; marls, 925 



Meuse, ratio of sediment to water, 

 190 



Mexico, 25, 26 ; snow-line in, 234 ; 

 volcanoes, 296, 987 ; mines of, 

 338, 340; height of Cretaceous 

 beds, 933 ; Archiean in, 444 ; Car- 

 boniferous, 587, 569 ; Permian, 

 659 ; Triassic, 739, 747, 755 ; 



