INDEX 



707 



Tapir, 666 



Tarr, R., cited, 103, 632 



Taylor, F. B., cited, 646 



Ti-ie.i-i.-, 512 



Tellina producta, 595 

 Temnocheilus forbesianus, 469 

 Temperature changes, effect on rocks, 25 

 Temperature, increase with depth, 225 

 Temperature of sea water, 169 

 Tennessee phosphates, 374 

 Tercbra unilineata, 597 

 Terebratula deformis, 500 

 Terminal moraines, 155, 163, 628 



topography of, 630 

 Terrigenous deposits, 189, 197 

 Terraces, 119, 120 



wave-built, 187 



wave-cut, 181 

 Tertiary, 556-612 

 Tertiary' lava flows, 229, 561, 587 

 Trt rabclodon angustidens, 591 

 Tetragraptus bigsbyi, 385 



fruticosus, 385 

 Textularia subangulata, 572 

 Thalattosaurs, 501 

 Thames River, solution by, 36 

 Thamnastraea prolifera, 511 

 Thecosmilia tnchotoma, 511 

 Thermal metamorphism, 291 

 Theropoda, 495 

 Thoroiares, 187 

 Tight, W. G., cited, 632 

 Till, 618, 627 

 Tillotherium fodiens, 571 

 Time divisions of geology, 323 

 Titanotheres, 579 

 Titanotherium validum, 578 

 Todd, J. E., cited, 632 

 Topographic effects of glacial erosion, 



151 



Topographic maps, 17 

 Topographic youth, 71 

 Tornatellaea bella, 573 

 Tornoceras mithrax, 416 

 Toronto interglacial beds, 665 

 Trachyceras austriacum, 498 

 Transportation by streams, 73, 76 

 Transportation by waves, 183 

 Trap, 261 

 Travertine, 287 

 Tremataspis, 422 

 Trematis mailepunctata, 382 

 Trenton Falls, 369 

 Trenton limestone, 368, 369 

 Triassic fossils, 500 



Triassic life, 494 

 Triassic period, 484-501 



climate of, 400 



close of, 490 



igneous rocks of, 487 

 Tributaries, development of, 64 

 Triceratops prorsus, 548 

 Trigonia emoryi, 530 



navis, 510 

 Trilobites, Cambrian, 348, 359 



Devonian, 414, 417 



Ordovician, 378, 379 



Silurian, 399 

 Trimerella acuminata, 396 



ohioensis, 396 

 Trinity formation, 524 

 Trinucleus ornatus, 378 

 Trocholites ammonius, 380 

 Trocus saratogensis, 361 

 Troostocrinus reinwardti, 395 

 Tropidoleptus carinatus, 419 

 Tropites subbullatus, 498 

 Truncatulina lobatula, 572 

 Tufa deposits, 204 

 Tuffs, 250, 258 

 Tully limestone, 402 

 Turbo moyonensis, 531 

 Turner, H. W., cited, 586 

 Turritella budaensis, 530 



mortoni, 573 



variabilis, 597 

 Turtles, Cretaceous, 549, 551 



Jurassic, 519 

 Tuscaloosa series, 523 

 Tyrrell, J. B., cited, 613, 628 



Udden, J. A., cited, 12 



Ulrich, E. O., cited, 367, 406 



Ulsterian series, 402 



Uncinulus mutabilis, 414 



Unconformities, 272 



Undertow, 183, 184 



Undina gulo, 512 



Unequal hardness, effects of, 89 



Unio douglassi, 530 



Unio farri, 530 



Upham, Warren, cited, 203, 628, 646 



Upper Cambrian, 346, 347 



Upper Carboniferous period, 441 



Upper Huronian, 331 



Utica shales, 368 



Vaginalina legumen, 572 

 Valley glaciers, 127 

 Valley trains, 164 



