1I!<DEX. 



1073 



Pentamerella arata, 581, 590 

 Pentamerids, 574 

 Pentameroceras mirum, 551 

 Pentamerus, 4'25§, 550, 552, 562, 



568 ; boi-ealis, 568 ; brevirostris, 



569 ; caudatus, 567 ; comis, 601 ; 

 conchidium, 552, 569 ; fornicatus, 

 563 ; galeatus, 560*, 562, 563, 567, 

 568, 569, 626, 628 ; globosus, 520 ; 

 Knightil, 551, 564*, 565, 567, 568, 

 569 ; laevis, 569 ; oblongus, 520, 

 545, 546*, 550, 551, 552, 567, 568, 

 569 ; occidentalis, 551 ; pseudo- 

 galeatus, 560*, 561, 562 ; undatus, 

 520 ; Verneuili, 561* 



Pentamerus, Lower, 535; Upper, 535 

 Pentremites, 480§, 585, 590 

 Pentremites, 597, 601, 602, 641; 



Godoni, 640*, 646; ovalis, 626; 



pyriformis, 040*, 646 

 Pentremital group, 637 

 Peoquop Range, 365 

 Peperino, 80§ 

 Peralestes, 789* 

 Peramus, 789* 

 Peraspalax, 789* 

 Perch, 812, 879 ; family, 862, 901 

 Perchoerus, 918 

 Pericentric stratification, 99 

 Peridot, 67§ 

 Peridotyte, 89§ 

 Perihelion and aphelion, changes of, 



254 

 Period, 406§ 

 Peripatus, 723 

 Periptychus, 917 

 Perisphinctes, 749, 760 ; Colfaxi, 



760 ; Miihlbachi, 760 ; virgulati- 



formis, 760 

 Perlyte, 122 

 Permian period, 660, 689, 690 ; 



foreign, 697, 704 

 — in India, etc., supposed to be 



glacial, 698 ; emergence of Ant- 

 arctic land, 787 

 Permo-Carboniferous, 635§, 687 

 Perna maxillata, 378 ; mytiloides, 



790 

 Perry sandstone, 594, 606 

 Persia, plateau of, 26 ; Cretaceous 



in, 857 ; Tertiary in, 920 

 Persian Gulf, 41 

 Perthite, 321 

 Peru, 41, 51, 218, 222 ; volcanoes of, 



296; Cretaceous in, 857, 867; 



Tertiary, 935 

 Peruvian islands, 153 

 Petalite, 449 



Petalodonts, 643, 647, 705 

 Petalodus, 680, 692; curtus, 643; 



destructor, 680*, 692 

 Petraia, 515, 520, 567 ; bina, 520, 



567 ; profunda, 517 

 Petricola. 157 ; centenaria, 917 

 Petrifactions, 131, 135, 143 

 Petrified forests, 135 

 Petrodus, 692 ; occidentali8,680*,692 

 Petroleum, 522, 555, 661 

 Petrosilex, 84§ 

 Petschora-land, 776 

 Phacoceras, 675 ; Dumbli, 675, 676*, 



691 



Phacops, 422§, 520, 521, 551, 561, 



568, 570, 579, 586, 591, 599, 626; 



bufo, 599*; callicephala, 515; 



caudata, 567, 568 ; Downingii, 



565*, 567, 573 ; elegans, 568 ; 



fecunda, 568, 570 ; granulata, 625 ; 



latifrons, 625, 626, 627; Logani, 



561* ; longicaudata, 567 ; nupera, 



614 ; rana, 592, 599*, 614 ; Stokesi, 



567 ; trisulcata, 550 

 Ph^nogams, 434-435, 595; Neo- 



paleozoic, 460 

 Phsethonides, 591, 643 ; occidentalis, 



614 ; spinosus, 614 

 Phalangid*, 691 

 Phaneropleuron, 418, 621, 625; 



curtum, 617*, 619, 621 

 Pharella Dakotensis, 855 

 Phascolestes, 789 

 Phascolotherium, 789* ; Bucklandi, 



789* 

 Phasma, 677 

 Phenacodus, 908, 910, 917, 918, 925 ; 



primsevus, 903* 

 Phenocryst, 77§ 

 Philippine Islands, 296 (volcanoes), 



297, 920, 021 

 Phillipsastrea, 718 ; gigas, 590 ; 



Verneuili, 5S4*, 585, 590 

 Phillipsia, 521, 643, 676, 686, 700; 



Cliftonensis, 691 ; major, 691 ; 



Missourieusis, 691 ; scitula, 691 ; 



seminifera, 700* 

 Phillipsite, 136, 144 

 Phlegethontia, 692 ; linearis, 682 

 Phlegraean Fields, volcanic region 



of, 298 

 Phlogopite, 65§ 



Phlyct^naspis Acadica, 616*, 618 

 Phoberus caecus, 59 

 Phoenicites, 921 

 Phoenix Islands, 20 

 Pholadella, 621 

 Pholadomya, 759, 780 ; abrupta, 



917 ; cuneata, 925 ; liducula, 790 ; 



Lincenumi, 855 ; Marylandica, 



915; multicostata, 791; ovulum, 



791 ; papyracea, 855 

 Pholas, 157, 158 ; alatoidea, 915 ; 



crispata, 983 

 Phonolyte, 85§ ; columnar, 263*, 



264* ; solubility, 122 

 Phos Texanus, 916 

 Phosgenite, 335 

 Phosphates, 63, 69 

 Phosphatic concretions, 73, 493, 



891 ; deposits, 153 ; fossils, 314, 



487 

 — rock-material, 72-74, 141 

 Phosphoric acid, 69, 72, 73, 74, 75, 



153, 241, 663 

 Phosphorite beds of Quercy, 926 

 Phosphorus, 62, 63§, 123 ; in mineral 



coal, 663 

 Phragmites Alaskanus, 839 

 Phragmoceras, 567 ; parvum, 551 

 Phragmodictya, 646 

 Phrynus, 724 



Phthanocoris, 722 ; occidentalis, 691 

 Phthanyte, 82§ 

 Phylloceras, 793, 794 ; ptychoicum, 



791 



Phyllograptus, 470, 520 ; Anna, 500 ; 

 typus, 498* 



Phyllopods, 421§, 439§ ; Cambrian, 

 Lower, 474* ; Cambrian, Middle, 

 476, 477* ; Chemung, 614, 615* ; 

 Corniferous, 586 ; Hamilton, 599, 

 600*; Lower Silurian, 521 ; Paleo- 

 zoic, 720 ; Subcarboniferous, 643 



Phyllyte, 80§, 89§ 



Physa, 152 ; heterostropha, 682 



Physeter, 912, 927 



Physiographic chart of the world, 

 46, 47*, 350 



Physiographic geology, 14§, 15 



Physospongia, 639, 646 



Phytolitharia, 163, 164* 



Phytopsis cellulosa, 505 



Pichincha (Mt.), 26, 296 



Pickwell Down beds, 625 



Picotite, 88 



Picryte, 88§ 



Pictured rocks, 94*, 464, 465* 



Piedmont region, 24, 443 



Pigeons, 54 



Pikermi beds, 927 



Pike's Peak, 811, 876 



Pileworm, 158 



Piloceras, 520, 573 ; Canadense, 501 ; 

 Wortheni, 501 



Pilton beds, 625 



Pilularia globulifera, 486* 



Pinacoceras Metternichi, 774 ; par- 

 ma, 774 



Pine, 435, 436, 667, 66S, 777, 859 



Pine Mountain, Ky., 543, 657 



— River, 746 



Finite, 68§, 318, 820 



Pinites, 704, 777 • 



Pinna, 129, 760 ; affinis, 925 ; decus- 

 sata, 866; expansa, 759*; Mis- 

 sourieusis, 647 ; MuUeti, 865 ; 

 peracuta, 690 



Pinnularia aequalis, 164*, 165 ; bore- 

 alis, 164*, 165 ; peregrin a, 437*, 

 894*; viridis, 164*, 165; viridula, 

 164*, 165 



Pinon Range, 365, 733 



Pinus, 853, 922 ; abies, 74 ; suc- 

 cinifer, 922 



Pinyte, 84§ 



Pipestone quartzyte, 468 



Pisolite, 96*§ 



Pisolitic limestone, 859 



Pit River, 747, 749, 809 



Pitchstone, 84§ 



Pithecanthropus erectus, 1036 



Pitt, Mt., 296 



Pittsburg coal-bed, 653 



Placenticeras Guadalupffi, 855; pla- 

 centa, 841, S42*, 854, 855 



Placoderms, 417 ; Trenton, 509 



Placodus, 773 



Placoparia, 520, 521 



Placuna scabra, 854 



Placunopsis, 690 



Planer (Lower), 866 ; (Middle), 866 



Plagiaulax, 768, 789, 864; minor, 

 789* 



Plagioclase, 64§ 



Plaisancian beds, 927 



Planation, 167§, 169, 219, 221* 



Plane tree, 831, 922 



DANA' 8 MANUAL — 68 



