1052 



INDEX. 



Death Gulch, 128 



Death VaUey, 23, 128, 200 



Debris-cones, 269*, 2T1§, 285 



Decapods, 420§, 423§, 424, 438§, 

 439, 525, 615, 676, 691, 707, 

 720 



Deccan, igneous outflows of, 299, 

 876, 938 



Deception Island, 296 



Decomposition, 258, 497, 522, 655, 

 665, 710, 822 



Deep River, or Deep Creek, Mon- 

 tana, 895 



— beds, 886, 894, 911, 919 



Deep River (N. C.) Triassic area, 

 741, 743, 799 



Deer, 54, 910, 911, 924, 927, 930 



Deflation, 159§ 



Deformation of fossils. See Fossils 



Degeneration, 717 ; in Insects, 721 ; 

 in Reptiles, 797, 870 ; in Am- 

 phibians, 869 ; in Birds, 871 ; in 

 Mammals, 931, 1017 



Deistersandstein, 865 



Delaware, 23 (height), 87, 856; 

 Cretaceous in, 816, 828 



— Bay, 230, 378, 744, 819 



— flags, 606 ; limestone, 581 



— River, 594, 744, 816, 945 



— Water Gap, 232, 578 

 Delocrinus, 690 

 Delphinapterus catodon, 983 ; 



leucas, 983, 1001* 

 Delphinus, 144, 927 

 Delta formations, 98, 191, 195, 196- 



198, 197*, 892 

 Delta Survey, 190 

 Deltatherium, 917 

 Delthyris. See Spirifer 

 Delthyris shaly limestone, 559 

 Deltodus, 692 



Demavend (Mt.), 296 (height) 

 Denbighshire grits, 503, 564 

 Dendrerpeton, 682 

 Dendrocrinus Cambrensis, 481 ; 



Cinoinnatiensis, 516 ; retractilis, 



514 

 Dendrodus, 625, 647 

 Dendrograptus, 520 ; gracillimus, 



516 ; Hallianus, 477* ; tenuira- 



mosus, 516 

 Dendrophis, 704 

 Dendrophylla, 429* 

 Denison beds, 817, 887 

 Denmark, Cretaceous in, 856, 857, 



858 

 Density of the earth, 15, 376 ; of 



the moon. Mercury, Venus, 



Mars, Jupitei-, 16 ; of mountains, 



379 

 Dent de Morcles, profile of, 367* 

 Dent du Midi, 920 

 Dentalina priscilla, 690 

 Dentalium, 424, 707 ; attenuatum, 



917 ; Meekianum, 690 ; Missis- 



sippiense, 898*, 916 ; subteve, 



675*, 690 ; venustum, 647 

 Denudation by the atmosphere, 



159, 160*, 161* ; by glaciers, 247- 



251 ; by water, 167-169, 177-189, 



186*, 451, 934 ; by waves, 217, 218, 



219, 221, 882 



Denudation, relations of mountain 



ranges to, 387-388 

 Denver, 364 



— group, 815, 825, 827, 828, 829, 830, 

 839, 847, 856, 875 



Deoxidation, 124§, 127, 128; de- 

 structive effects of, 125, 126*, 

 127* ; through the growth of 

 plants, 136 



Deposition, by glaciers, 247, 250 ; 

 by water, 169-170, 189-202, 216, 

 628 ; by waves, 222 ; by winds, 

 161 



Deposits, ore. See Ore. See also 

 Sediment 



Derbya crassa, 690 



Derivation of Arachnids, 722-723; 

 Limuloids and Crustaceans, 720- 

 721 ; Myriapods and Insects, 723- 

 724 



DesatoyaMts., 757 



Des Chutes River, 894 



Deserts, distribution of, 50, 51 ; 

 sands of, 160, 161 



Desmatippus, 911, 912, 919 



Desmatochelys Lowii, 849 



Desmids, 437§, 859 ; in hornstone 

 or flint, 582, 583*, 859 



Desmoceras Breweri, 837 



Destruction of Hfe. See Life 



Detritus, 75§, 81§, 167§ 



Devil-fishes, 424 



Devonian (or Devonic) era, 575 ; 

 North American, 575 ; Oriskany, 

 577; Corniferous, 579 ; Hamilton, 

 592; Chemung (with Catskill), 

 602 ; foreign, 622 ; geological and 

 geographical progress, 628 ; bio- 

 logical, 630 ; upturning, 630 



— relations of the Lower Helder- 

 berg fauna, the Hercynian ques- 

 tion, 569-570 



Diabase, 87§, 273, 319, 325, 339, 453, 

 457, 468, 469, 518, 748, 802 



Diabase-schist, 87§ 



Diablerets, 920 



Diablo, Mt., 835, 892 



Diaclases, 118§ 



Diacodon, 918 



Diadema, 59 



Diallage, 88 ; rock, 87 ; structure, 

 321 



Diamond, 62, 64, 819, 455 



Diamond Head, Oahu, 271* 



Diamond Mt., 733 



Diaspore, 820 



Diatom ooze, 57, 143 



Diatoma vulgare, 699 



Diatomaceous earth, 889 



Diatoms, 56^ 57, 60, 64, 72, 81, 121, 

 135, 136, 140, 142, 148, 152, 153, 

 163, 164*, 229, 319, 433*, 436, 487*, 

 699, 817, 859, 887, 895 ; in flint, 

 582, 588* 



Diatryma gigantea, 902 



Dicellocephalus, 477, 478, 481, 483, 

 500, 502, 503, 516 ; lowensis, 479* ; 

 Minnesotensis, 478, 479* 



Diceras, 780, 877 (end); arietinum, 

 780*, 790 ; Lonsdalei, 865 



Diceratherium, 911, 918 



Diceratian, 790 



Dichobune, 926; cervinura, 926 



Dichocriiius, 646 



Dichodon, 926; cuspidatus, 926 



Diclonius luirabilis, 846 



Dicotyles, M, 1002 ; nasutus, 1000 ; 



Pennsylvanicus, 1012 

 Dicranograptus ramosus, 510*, 515, 



510 

 Dicranophyllum, 673 

 Dictyocaris, 567 

 Dictyocha, 894* ; crux, 894* 

 Dictyo-cordaites Lacoei, 610* 

 Dictyonema, 481, 550, 590 

 Dictyonema shales, 482 

 Dictyoneura anthracophila, 701*, 



702, 704 ; Humboldtiana, 703 ; 



Monyi, 702 

 Dictyojihyton, 432 ; tuberosum, 



611*, 621 

 Dictyopteris, 699 

 Dictyorhabdus priscus, 509* 

 Dicynodon, 707, 737, 773 

 Didelphis, 925 

 Didelphodus, 918 

 Didelphops, 853* ; comptus, 853* ; 



ferox, 853* ; vorax, 868* 

 Didelphys, 55, 910, 918 

 Didus ineptus, 54, 1014 

 Didymictis, 917, 918 

 Didymites globus, 774 ; tectus, 774 

 Didymograptus, 520 ; extensus, 500 

 Dieconeura, 691 

 Dielasma, 642 ; bovidens, 690 ; 



elongata, 707 ; hastata, 700* 

 Dikes, 90, 262*, 264, 298§, 299*, 802, 



327§ 

 Diloma ruderata, 927 

 Dimetian period of Hicks, 457 

 Dimetrodon, 688 

 Dimorphodon, 788 

 Dinarites Liccanus, 773 

 Dindyniine, 521 

 Dinichthys, 603, 618; Hertzeri, 



617*, 619 ; Gouldi, 619 

 Dinictis, 911, 918 

 Dinoceras, 907§ ; size of brain of, 



914* ; mirabilis, 907 

 Dinoceras beds, 886 

 Dinophis, 901 

 Dinornis, 54, 1014, 1019 ; giganteus, 



54, 1014 

 Dinosaurs, Triassic, 741, 751 ; Ju- 

 rassic, 760, 768, 785, 796 ; Cre- 

 taceous, 816, 828, 836, 844*, 856, 



863*, 867, 870 ; relation to Birds, 



796 

 Dinotherium, 927 ; giganteum, 924, 



925* 

 Dinotosaurus, 785 

 Dionide, 521 

 Diotinites, 832 ; borealis, 888 ; Buch- 



ianus, 832*, 834; Cohimbianus, 



884 ; Dunkerianus, 834 

 Diopside, 318, 323 

 Dioryte, 86§, 97* ; schist, 86§ 

 Diospyros, 922 

 Dip, 99§*, 105, 114* 

 Dipeltis diplodiscus, 691 

 Diphya limestone, 791 

 Diphyphyllum, 550, 640 ; arundi- 



naceum, 591 ; fasciculum, 592 ; 



stramineum, 591 



