INDEX. 



719 



Sweetwater River, 28 



Sweetwater Valley, 524 



Sweetwater Valley, geology of, 95, 116 



Synocladia, 548, 619 



Syringopora, 546, 619 



Table of observations on springs, 594 



Tables of azimuths and distances, 662-672 



Tables of latitudes, &c, 681, 687 



Tabular view of Cretaceous species, 252 



Tabular view of Laramie species, 255 



Taggart, Mr., 443^465 



Tancredid, 561, 579, 626, 627 



Tancredia ccelionohis, 288 



Terebratida augusta, 560, 562, 624, 627 



Terebratula semMnvplex, 560, 624, 627 



Terraces at Logan, 604 



Terraces in Cache Valley, 566 



Terraces on Franklin Butte, 604 



Terraces ou Marsh Creek, 565 



Tertiary, 606, 609 



Tertiary beds in Gros Ventre Valley, 457 



Tertiary deposits, 453 



Tertiary of Green Eiver District, 635 



Tertiarv orography, 640 



Tertiary rocks, 393, 445, 448, 452, 466 



Tertiary section, 458, 635 



Teton Division, geological report of, 323 



Teton Pass, 432, 435 



Teton Pass Hills, 433 



Teton Pass Mountains, 429, 432 



Teton Range, 411, 443 



Teton Eange, Archaean area of 412 



T6tons, 340 



To-gwo-tee Pass, 443, 471 



Topographical Reports, 651, 675 



Topography, 647 



Total eclipse of sun, 655 



Towns, elevations of, 681 



Towns, tables of, 681 



Thomas Fork, 513 



Thomas Fork of Bear River, 581 



Thompson Plateau, 513, 518, 530, 539 



Thompson Plateau, Carboniferous of, 617 



Thompson Plateau, geology of, 539 



Thompson's Pass, 518 



Three Buttes, 376 



Three Crossing, 29 



Three Deer Creek, 372 



Three Pine Creek, 344 



Timbered areas of Green River District, 

 704 



Timber lines, elevation of, 686 



Timber-line heights, 686 



Tin Cup Creek 360, 388, 399, 404 



Trachyte, 377, 379, 382, 406, 407, 420, 441, 

 447,44-j 



Trachytes hows, 376 



Trails, 59 



Trapezium, 538,629 



Trapezium micronema, 293 



Trapezium truncaturn, 292 



Triangulation primary, 651, 655 



Trias, 332, 423 



Trias in Salt River Range, 547 



Trias in Wyoming Range, 541 



Triassic, 382, 453, 471, 584 



Triassic Group, 80, 105, 121 



Triaasic in Blaelttoot Basin, 556, 559 



Triassic in Salt River Range, 550 



Triassic on Fontenelle, 537 



Triassic plants, 628 



Trigonia, 537, 626, 627 



Trout Creek, 600 



Twin Creek, 514, 574, 590 



Twin Creek, fossil fish from, 535 



Twin Mountains, 422 



Twin Springs, 596 



Twin Springs, fossils from, 563 



Two Ocean Pass, 476, 660 



Tufa, 591,593 



Tullock's Fork, 590 



Turbonilla eoalvillensis, 305 



Turritella eoalvillensis, 315 



Turritella marnochi, 314 



Turritella micronema, 316 



Unio haydeni, 532, 638, 639 



Union Pass, 442 



Unio vetustus, 578, 582, 632 



Upper Bear River Valley, 574 



Upper Carboniferous, 341, 384 



Upper Gros Ventre Buttes, 446 



Upper Portneuf Canon, 564 



Upper Portneuf Valley, geology of, 563 



Valleys of Green River District, 515 



Valleys of Teton District, 326 



Valvdta, 601,605,640 



Vegetation, Sweetwater, 59 



Virginia Peak, 546 



Vivipara, 604 



Volcanic cones, 561, 596 



Volcanic rocks, 381,371,374,376,378,402,. 

 405, 418, 445, 472, 643 



Volcanic rocks of Jackson's Basin, 446 



Volsella, 626, 627 



Volsella (Brachydonles), 575, 632 



Wagner Creek, 532 



Wagon roads, 57 



Wahsatch Group, 512, 526, 531, 536, 574, 

 575,583,584,599,635 



Wahsatch Group in Green River Basin, 

 516, 540 



Wahsatch Range, 605 



Walker, D. H., fossils sent by, 269 



Warm Springs in Lower Snake Valley, 409' 



Warm Water Pass, 442 



Wahsatch Group, 88, 127 



West Atlantic Peak, 653, 665 



Weston, 603 



Weston Creek, 606 



West Pass Creek, 421 



West Teton River, 415 



West Teton Valley, 416 



Whisky Gap, 38 



Whisky Peak, 664 



White, C. A., Contributions to Paleontol- 

 ogy No. 2, 273 



White, C. A., report of field-work, 161 



White Clay Creek, 528 



White, Dr. C, A., 353, 400, 624, 631 



White, Dr. C. A., on Jura Trias, 625 



White Riyrer Indian Agency, fossils near, 

 224 



Wild Irishman Mine, 143 



Willow Creek, 327, 338, 351, 371 

 j Willow Creek Basin, 349 

 i Willow Creek Ridge, section through, 352 



Wilson, A. D., report of, 651 

 j Wilson, Mr.. 392 



; Wind River drainage, 50 



l Wind River Mountains, 512, 513, 523, 655 



