iNDi-:x. 



889 



Page 



MoDzonite, photomicrographs of 250 



Mount Doane, andesite of 315 



Mount Etna profile of 232 



Mount Everts, intrusive rocks of 85-86 



rhyolite of 358 



Mount Hancock, features of 190-191 



Mount Holmes, analysis of rocks of 65 



features of bysmalith of 16-20, 64-09 



view of bysiuatolith of 1S 



view of mountains north of 4 



zone of contact between intruded sheet and 



country rock near 68, 69 



Mount Langford, dike at 312 



Mount ftorris, fossil forest on - ^60 



Mount Norris and The Thunderer, view of 222 



Mount Schurz. rocks of 316-318 



Mount Stevenson, rocks of 315-316 



Mount Vesuvius, profile of 232 



Miigge, O., cited 399 



Musacere, descriptions of species of 686-687 



Musophyllum complicatum Lx 686-687,506 



Myacites (Pleuromya) subcompressaMeek 626 



Myacites subcompressus (Meek) White 626 



Myrica banksisefolia Ung 693 



Myrica bolanderi (?) Lx 658-659, 79G 



Myrica fallax Lx 693 



Myrica lamarensis n. sp 693, 50S 



Myrica polymorph:! Schimp 692 



Myrica scottii Lx 694,505 



Myrica torreyi Lx 692 



Myrica wardii n. sp 694-693,505 



Myricacese, descriptions of species of 694-693 



jNT. 



Natica ( ?) sp 630 



Naticopsis ( ?) sp 572, 581 



Statural liridge, Bridge Creek, rhyolite at 386-387 



views of 3S6 



fteritina nebrascensis M. and H 629-6J0 



fteritina ( ?) pbaseolaris White 629 



ft eritiua pisuni Meek 630 



fteritma powelli W hite 630 



fteritina wyomingensis n. sp 649-630, 648 



Nucula sp 638 



O. 



Obolella Hall 446 



Obolella chromatica 446 



Obolella nana M. and H 447 



Obolella polita 446 



Obolus Eich wald 443-44 4 



Obolus (Lingulella) desideratus Walcott 445-446,465 



Obolus (Lingulella) ferrugineus 445 



Obolus (Lingulella) granvillensis 445 



Obolus (Lingulella) manticulus 445 



Obolus (Lingulella) perattenuatus 441 



Obolus ( Lingulella) rotundatus 445 



Obolus (Lingulepis) acuminatus 443, 444 



Obolus (Lingulepis) acuminatus, var. meeki Wal 



co 1 1 4 4 4 , 468 



Obolus ( Lingulepis) piriformis 443 



Obsidian Cliff, rhyolite of 359-306 



views of 500 



Oleacea* - ? 53 



Onoclea minima n. sp 656-657, 794 



Onoclea sens;bilis fossilis ftewby 656,666 



Page. 



Ophitic and related basalts, occurrence of 436-439 



Oppelia (?) sp 630-631 



Oppelia subplicatella Vacek 631 



Orthis coloradoensis Shumard 450 



Ortlns creuistriata 524 



Orthis Keok uk 524 



Orthis michelina 521 



Orthis pepina Hall 450 



Orthis (?) remnicha 451-454, 470,472 



Orthis i ? ) sandbergi 454-453, 470 



Orthothetes insequalis Hall 489, 544-544, 5S6 



Orthotbetesmflatus 523,550 



Ortbotbetes sp 544 



Osiuunda afhuis Lx 673, 800 



Osprey Falls, basalt at 434 



Ostrea anomioides Meek 50, 633-634 



Ostrea engelmanni Meek 611 



Ostrea patina 611 



Ostrea pellucida M. and H 037 



Ostrea soleniscus Meek 637 



Ostrea sp . . -. 63 7 



Ostrea strigilecula White 610 



Outlet Canyon, topographic and geologic features of. 194-196 



view of 194 



Owen, D. D., cited 459 



3?. 



Pacbyphyllum bouchardi 499, 500 



Pachyphylluui devoniense 499,500 



Pacbyphyllum solitariuni 499 



Pachypbylluni sp 497-50O 



Pacbyphyllum woodmani 498, 499 



Pacific Creek, rocks and fossils of 198-199 



Paleozoic fossils, descriptions of 440-599 



Paliurus colombi Heer 660, 740, 842 



Paliurus minimus n. sp 659-660 



Paliurus zizypboides Lx. 660, 796 



Panther Creek, structure of mountains south of 9-30 



Peale, A. C, cited 489 



fossils collected by 601 , 002 



Pebble Creek, rocks of 211 



Pecten bellistriata Meek 613 



Pelecypoda, descriptions of species of. . . 610, 632, 633-635, 637 



Pentacrinus asteriscus Meek and Hayden 60S 



Pentacrimis whitei 608 



Perisphiuctes sp 63 1 



Perlite, views of specimens of 370 



Persea pseudo-carolinensis Lx 723,745,550 



Perseoxy Ion aromaticum Felix „ 767 



Phenocrysts, development of 266-2C8 



Pholadomya inaaquiplicata n. sp 645, 646 



Pholadoniya kingi Meek 644-645,646 



Pholadomya multilineata Gabb 625 



Pholadomya ncvadana Gabb 624 



Phragmites alaskana Heer 658 



Phragmites falcata n. sp 658,750 



Phragmites ( ?) latissima n. sp 683, S06 



Phyllites crossifoha n. sp 753-754, S44 S46 



Phylhtcs osseus Lx 754 



Phyllites sp 700 



Pinna kingi Meek 618 



Pin us contorta Dougl . 680 



Pinus contorta murrayana 678 



Pin us edulis Eugelm 680 



Pmus flexilis 678 



Pinus gracilistrobus n.sp 611, 676,500 



