INDEX. 



891 



Page. 



Quercus furcinervis Rossm 705 



Quercns gronlandica Heer 706 



Quercus grossidentata n. sp 704, 814 



Quercus hesperian. sp 709-710 



Quercus ? magnifolia n. sp 704-705, S 16 



Quercus olafeeni Heer 707 



Quercus prinoides Willd 709 



Quercus s- 707,818 



Quercus viburnifolia Lx 706 



Quercus weedii n. sp 705-706,824 



Quercus yanceyi n. sp 707-708, 818 



lied Creek, rocks ou 175 



Bed Mountains, rhyolite of 381-382 



Reiss and Stiibel, cited 294,409-410 



Reticularia cooperensis Swallow 489, 555-556, 568, 595 



Reticularia cooperensis var 556-557, 594 



Reticularia (?) peculiaris Sliuraard 488, 557, 558, 595 



Reticularia setigera Hall 556 



Retieularia (?) subrotundata Hall 557-55S, 595 



Retzia ( ?) circularis Miller 560 



Retzia ( ?) plicata Miller 5G0 



Retzia popeana Swallow 560 



Retzia radialis Walcott 560 



Retzia vera Hall 560 



Retzia verueuili Hall 5G0 



Rhamnacea?, descriptions of species of 740 



Rhamnacinium radiatura Felix 769-77 1 , 876, 878 



Rbamnus rectinervis Heer 740 



Rhipidomella micbeliua Leveille 52 1 



Rbus bendirei Lx 601 



Rbyncbonella canaarifera Winchell 542 



Rbyncbonella gnathopbora Meek 609-610, 64$ 



Rbyncbonella metallica "White 491. 540 



Rbyncbonella myrina Hall and "Wbittield 609 



Rbyncbonella pustulosa (?) 489 



Rbyncbonella pustulosa ( ?) Hall and Whitfield . . 489, 540, 590 



Rbyncbonella ringens Swallow 537-538 



Rbyncbonella sappho Hall 511 



Rhynchonella (Stenocesma) sappho Hall 541 



Rhyncbophora pustulosa 540 



Rhyolites, analyses of 426 



character and occurrence of 356-432 



characters of groundmass of 402-410 



intermingling of basalt and 430-432 



microscopical characters of 393- 4 1G 



occurrence of 4,5, 172 



variations in composition of 427-429 



views of 364 



Rhyolite-felsite, analyses of 65 



Rhyolitic glasses, photomicrographs of 406 



Roth, J., cited 70, 146 



Russell, I. C, cited 18 



S. 



Sabal major ( ? ) Ung 658 



Saddle Mountain, rhyolite of 392 



Salicacea.*, descriptions of epecies of 694-G?)8 



Salix angusta Al. Br 697 



Salix lav ateri Heer 697 



Salix varians Heer 697, 810 



Sanidine, character of phenocrysts of 398-399 



Sapindus affims New by 736,737 



Sapindns alatus ? Ward 737 



Sapindaceae, descriptions of species of 736-739 



Tage. 



Sapindus grandifolioloides n. sp 73&,S40 



Sapindus graudifoliolus Ward 737,844 



Sapindus obtusifolius Lx 7:'8 



Sapindus wardii n.sp 73S, 739,836,838 



Scaphiocrinus sp 516 



Scaphites cf. ventricosus M. and H 640 



Scaphites vcntricosufl Meek and Hayden 630 



Schists, occurrence of 4, 11-12 



Schucbert, Charles, acknowledgments to 480 



Seminnla humilis n. sp 565-566, 568, 598 



Seminula immatura n. sp 566, 59S 



Seminula madisonensis n. sp 4! 1 ?, 563-564, 598 



Seminula madisonensis var. persilla 564-565, 598 



Seminula quadrata 492 



Seminula subtilita 402 564,558 



Seminula wasatchensis 5G5 



Sepulchre Mountain, analyses of rocks of 26! 



character of lava at 340,341 



chemical analyses of rocks of i: 5-137 



chemical correlation of rocks of Electric Peak 



with those of 142-148 



comparison of rocks from Electric Peak and 13^-148 



diagram showing molecular variations of rocks 



at 136 



dike rocks of 128-133 



general features of SJ-92 



grades of crystallization , of eruptive rucks' of 131-133 



igneous rocks of 89-148 



mineral and chemical composition of eruptive 



rocks of 134-137 



order of eruption of rocks at 140 



view of 96 



volcanic rocks of 121-137 



Sequoia couttsia? Heer 6S1 



Sequoia, cones of "... 683, S02,S0-k 



Sequoia langsdorfii? (Brgt.) Heer 637 



6S2-6S3, 794,804,994 



Sequoia magnifica n. sp 76 1-762, S4S, S50, S60, 861, 874 



Sequoia reichenbaebi (Gein.) Heer 657 



Sequoia sempervirens 759 



Smitbia woodmani 498 



Smilaceffi, descriptions of species of 685-686 



Smilax lamarensis n.sp 6S5-6S6, 8S2 



Smilax pseudo-spinas L 686 



Smilax rotundifolia L G86 



Snake River, section in hills near 156 



Snake River gorge, geology of 173-175 



coals of 176 



Snake River fault, features of 197-198 



Snake River hot springs, features of 177-188 



view of J75 



Snowy Mountain, section at 206 



Snowy Range, sedimentary rocks of 205-206 



topography and geology of southern end of 20 -244 



South end hills of Gallatin Range, features of 10-11 



Solenopleura (? ) weedi 464-465, 478 



Soda Butte Creek, rocks of 210-211 



Soda Butte Yalley, geology of 212-214 



sections in 212, 213-214 



Sparganiaceic, descriptions of species of 683-684 



Sparganium stygium Heer 683-681 



Specimen Ridge, fossil forest at 758 



lava at , 341 



Spherulites in obsidian, character of 362-364 



figures showing sections of 413 



forms of 411-416 



views of 3/0, 4 10, 4 14, 422 



