976 



INDKX 



Titanotheriuin validum, 802 

 Todd, J. E., 873, 890 

 Topaz, 81 

 Topographic adjustment, 257 



features developed by wave-ero- 

 sion, 303 



map, 94 



maturity, 131 



old age, 132 



youth, 130 



Topography of ocean bed, 290 

 Tornatellaea bella, 796 

 Tornoceras mithrax, 581 

 Toronto interglacial beds, 916 

 Trachyceras austriacum, 697 

 Trachyte, 87 

 Tragulidse, 804 

 Tragulus, 804 

 Transportation by glaciers, 251 



by rivers, 144 



by waves, 308 



by wind, 89 



of sediment in sea, 308 

 Trap, 87 

 Trap-rock, 400 

 Travertine, 82, 87 

 Tremataspis, 589 

 Trematis millepunctata, 528 

 Tremolite, 52, 81 

 Trenton Falls, 511 



limestone, 509, 510 

 Triassic, alpine phase of, 687 



ammonites, 696 

 Triassic coal, 689 



faunas, 691 



geographic suggestions of, 698 



floras, 691 



igneous rocks, 687 

 Triassic of Asia, 690 



of Connecticut River valley, 682 

 Europe, 687 

 Pacific slope, 685 

 South America, 690 

 the West, 684 



period, 678-701 



climatic conditions of, 686 

 close of, 687 



reptiles, 692 



Tributaries, development of, 121 

 Triceratops prorsus, 763 

 Trigonia navis, 713 



emoryi, 740 

 Trilobites, Cambrian, 495 



Genevieve, 616 



Hamilton, 586 



Trilobites -continued 



Helderbergian, 577 



Kinderhook, 607 



Onondagan, 581 



Ordovician, 524 



Osage, 610 



Pennsylvanian, 657 



Silurian, 553 

 Trimerella acuminata, 550 



ohioensis, 550 

 Trinucleus ornatus, 524 

 Trinity series, 731 

 Tripolite, 38, 84 

 Trocholites ammonius, 525 

 Trochus saratogensis, 498 

 Troostocrinus reinwardtii. .~>n 

 Tropidoleptus carinatus, 585 

 Tropites subbullatus, 697 

 Truncatulina lobatula, 795 

 Tufa-deposits, 383 

 Tuff, 21, 87 

 Tully limestone, 559 

 Turbo moyonensis, 741 

 Turner, H. W., 733, 752,810,811 

 Turonian series, 757 

 Turritella budaensis, 740 



mortoni, 796 



variabilis, 826 

 Turtles, Cretaceous, 762, 7<><> 



Jurassic, 722 

 Tuscaloosa series, 728 

 Tuscarora deep, 358 

 Tylopoda, Eocene, 791 

 Tyndall, J., 287 

 Tyrrell, J. B., 866 



Udden, J. A., 89 



Uinta stage of Eocene, 77S 



Ulrich, E. O., 478, 498, 516, 522 



Ulsterian series, 559, ">(>:! 



Uncinulus mutabilis, 576 



Unconformities, :> ( .)7 



Unconformity between Permian an I 



Trias, 662 

 Undertow, 2!)ii, -JDS, 299 



deposition by, :!<)!> 

 Undina gulo, 717 

 Unequal hardness, effects of, 1-V; 

 Ungulata, Eocene, 787 

 Ungulates, evolution <>!'. 7V 

 Unio douglassi, 7.">0 



farri, 7:;i) 



Cn-l ratified drift. s.">2 

 Uplmm. \V.. 335, sc.fi. s7v 884, 891, 

 895, 012, '.):;() 



