INDEX. 



719 



SAveetwater River, 28 



Sweetwater Valley, 524 



Sweetwater Valley, geology of, 95, 11(3 



Synocladla, 548, 019 



Syringopora, 54(5, 619 



Table of observations ou 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 sj)ecies, 255 



Taggart,Mr.,443,465 



Tancredia, 561, 579, 626, 627 



Tancredia cwlionotus, 288 



Terebratida aiujusta, 560, 562, 624, 627 



Terebratula senmimpJex, 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, C35 



Tertiarv orography, 640 



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



Tertiary section, 458, 635 



T^ton Division, geological report of, 323 



T^ton Pass, 432, 435 



T6ton Pass Hills, 433 



T6ton Pass Mountains, 429, 432 



T6ton Eauge, 411, 443 



T6ton Range, Archsean area of 412 



T^tons, 340 



To-gwo-tee Pass, 443, 471 



Topograiihical Reioorts, 651, 675 



Topography, 647 



Total eclipse of sun, 655 



Towns, elevations of, 681 



Towns, tables of, 681 



Thomas Fork, 513 



Thomas Fork of Bear Eiver, 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 



Thi-ee Pine Creek, 344 



Timbered areas of Green Eiver 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, 448 

 Trachytes flows, 376 

 Trails, 59 

 Trapezium, 538, 629 

 Trapezium viicronema, 293 

 Trapezium truncatnm, 292 

 Triangulatiou primary, 651, 655 

 Trias, 332, 423 



Trias in Salt Eiver Eange, 547 

 Trias in Wyoming Eange, 541 

 Triassic, 382, 453, 471, 584 

 Triassic Group, 80, 105, 121 

 Triassic in Blacktbot Basin, 556, 559 

 Triassic in Salt Eiver Eange, 550 

 Triassic ou Fontenelle, 537 



Triassic plants, 628 



TrUjonia, 537, 626, 627 



Tniut 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 coalvillensis, 305 



TurriteUa coalvillensis, 315 



Turritella marnocJii, 314 



TurriteUa micronema, 316 



Unio ha;/deni, 532, 638, 639 



Union Pass, 442 



Unio vetustus, 578, 582, 632 



^Tpper Bear Eiver Valley, 574 



Upper Carboniferous, 341, 384 



Upper Gros Ventre Buttes, 440 



Upi^er Portneuf Canon, 564 



Upper Portneuf Valley, geology of, 563 



Valleys of Green Eiver District, 515 



Valleys of T6ton District, 326 



Valvdta, 601, 605, 640 



Vegetation, Sweetwater, 59 



Virginia Peak, 546 



Vivi2^ara, 604 



Volcanic cones, 561, 596 



Volcanic rocks, 331, 371, 374, 376, 378, 402, 

 405, 418, 445, 472, 643 



Volcanic rocks of Jackson's Basin, 446 



Volsella, 626, 627 



VolseUa {Braclvydonies), 575, 632 



Wagner Creek, 532 



Wagon'roads, 57 



Waiisatch Group, 512, 526, 531, 536, 574, 

 575, 583, 584, 599, 635 



Wahsatch Group in Green Eiver Basin, 

 516, 540 



Wahsatch Eange, 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, 005 



Weston, 003 



Weston Creek, 606 



West Pass Creek, 421 



West T6ton Eiver, 415 



West Teton Vallev, 416 



AVhisky Gap, 38 



Whisky Peak, 664 



White, C. A., Contributions to Paleontol- 

 ogy No. 2, 273 



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



White Clav Creek, 528 



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



Whit-e, Dr. C. A., on Jura Trias, 625 



White Eiver Indian Agency, fossils near, 

 224 



Wild Irishman Mine, 143 



Willow Creek, 327, 338, 351, 371 



WilloAV Creek Basin, 349 

 i Willow Creek Eidge, section through, 352 

 i Wilson, A. D., report of, 651 

 : Wilson, Mr., 392 



Wind Eiver drainage, 50 

 i Wind Eiver Mountains, 512, 513, 523, 655 



