INDEX. 



791 



Phalangista, 424.$ 

 Phanerostomum senarium, 



474. 

 Pharella Dakotensis, 478. 

 Pliascolarctos, 424.$ 

 Phascolomys, 424.$ 

 Phascolotheriuni Bucklandi, 



453, 462.* 

 Phillipsastrea Verneuili, 273* 

 Phillipsia. 370. 



Cliftonensis, 349. 



major, 349. 



Missouriensis, 349. 



seraiuifera, 319.* 

 Phlogopite, 57.g 

 Phoca, 529.§ 



Wymani, 521. 

 Pholadomya Fidicula, 464. 



gibbosa, 464. 



occidentalis, 479. 



papyracea, 478. 

 Phonolite, S7.§ 

 Phospbatic nodules, 66, 67- 

 Phragmoceras, 214.$ 



iminaturum, 214. 

 Pbryganea, 420.$ 

 Pbvllograptus Typus, 191.* 

 Phyllopods, 154.$ 



a comprehensive type, 

 597. 



first of, 194. 



range of, in time, 402. 

 Pbysa beterostropba, 347. 

 Pbyseter, 529.§ 

 Pbysiograpby, 2.$ 

 Pbysiograpbic Cbart, 11, 42, 

 587. 



Geology. 7,$ 9. 

 Pbytopsis tubulosus, 211. 

 Pbytosaurus, 437. $ 

 Pictet on Dinosaurs, 346. 



on Tertiary mammals,529. 

 Pictured rocks, 174. 

 Pierre-a-bot, 545. 

 Pierre group, 469. 

 Pillared rocks, 174. 

 Pinites Brandlingi, 337. 

 Pinna, 399. 



peracuta, 349. 

 Pinuigrades, 422.$ 

 Pinnularia sequalis, 631.* 



borealis, 631.* 



peregrina, 166,* 512. 



tseniata. 631.* 



yiridis, 631* 



Tiridula, 631* 

 Pinus Strobus, 166.* 

 Pitcbstone, 8S.§ 

 Pitb of Conifers, 337. 

 Pitbecus, 529, 584. 

 Pittsburg coal-bed, 330. 

 Placodus impressus, 438. 

 Placoganoids, 279.g 

 Placoids, -2". I 

 Plagiaulax, 438.? 



Becklesii, 4&. 



minor, 463. 

 Plagiostoma gigantea, 454,* 



464. 

 Planerkalk, 480. 

 Planorbis. first of. 453. 

 Plants, subdivisions of, 165.$ 



number of living species 

 of, 575. 



Plants, Palaeozoic, number of, 

 295. 

 rank of earliest, 396, 596. 

 and animals, distinctions 



of, 747. 

 changed to graphite, in 

 gneiss in Connecticut, 

 409. 

 terrestrial, in Carboni- 

 ferous, 333. 

 terrestrial, in Catskill 



beds, 292. 

 terrestrial, in Chemung 



group, 289. 

 terrestrial, in Devonian 



302. 

 terrestrial, in Hamilton 



period, 282. 

 terrestrial, in Ludlow 



beds, 264. 

 terrestrial, in Silurian. 



256, 263, 264. 

 terrestrial, of Tertiary. 

 512, 525. 

 Plant-growth of the Carboni- 

 ferous, 363. 

 Plantigrades, 422.? 

 Plaster of Paris, 64.$ 

 Plastic clay, 522. 

 Plateaus, 16,$ 21. 

 Platinum, age of, 413. 

 Platyceras, 267.$ 



angulatum, 241 * 

 dumosum, 275. 

 ventricosum, 255. 

 Platycrinus Saffordi, 312* 

 Platyostoma Niagarensis,241.* 

 Platyrrhines, 422.$ 

 Plectrodus, 264.$ 

 Pleistocene of Lyell, 523.$ 



See POST-TERTIARY. 



Plesiarctomys, 529.$ 

 Plesiosaurs, 452.$ 

 Plesiosaurus costatus, 437. 



dolicbodeirus, 452, 456.* 



Hawkinsii, 437. 



macrocepbalus, 452, 457.* 



range of, 487. 

 Pleurocystis squamosus, 212.* 

 Pleurodonts, 346.$ 

 Pleurophorus subcuneatus, 



370* 

 Pleurotomaria Anglica, 464. 



Calcifera, 192. 



carinata, 319. 



expansa, 464. 



granulata, 464, 465. 



gregaria, 192. 



lenticularis, 213,* 224. 



litorea, 233. 



ornata, 459. 



spherulata, 349.* 



tabulata, 349* 

 Plicated rocks, effects of ero- 

 sion of, 681. 

 Plicating force acting from 

 tbe ocean, 410. 



force, amount of, 410. 



force slow and long con- 

 tinued, 411. 

 Plication of clayey layers, 

 716* 



of layers caused by slides, 

 650, 716. 



Plications, causes of, 716. 



Appalachian, characters 

 of, 406. 



map of axes of, in Penn- 

 sylvania, 406* 



of Azoic, 140.* 

 Pliocene, 506,$ 523. 



plants of, in Europe, 525. 

 See, further, Tertiary. 

 Pliolopbus, 529.$ 

 Pliopitkecus, 529.$ 

 Plombieres, zeolites formed 



at, 716. 

 Plumbago, 64 v 

 Plumbaginous" schist, 77.$ 

 Plymouth group, 294. 

 Poacites, 336.$ 

 Pocillopora, 618.$ 

 Podozamites lanceolatus, 420.* 

 Poebrotherium, U. Missouri, 



519. 

 Poikilitic group, 372. 

 Point Levi, rocks of, 175. 

 Pollicipes, first of, 455. 

 Polycystines, relations of, 748. 

 of Barbadoes, &c, 612. 



in Richmond Tertiary ,512. 

 Polyhalite, 86.$ 

 Polynesian chain of islands, 



33* 

 Polyps, 158.$ 163. 



first of true, 208. 



range of, in time, 400. 

 Polyptychodon, 482. 

 Polythalamia. See Rhizopods. 

 Ponent series, 380. 

 Porambonites, 183.$ 

 Porcelain jasper, 79.$ 

 Porcelanite, 79.$ 

 Porcellia, 296.$ 

 Porcellio, 151.* 

 Porcupine, 423.$ 

 Porites, 163, 618.$ 

 Porphyrine, 79.$ 

 Porphyry, 79.$ 87.$ 

 Portage group, 287. 

 Porter's Creek group, 509. 

 Portland dirt-bed, 447, 453. 



Oolite, 448. 

 Portlandian group, 449. 

 Posiclouia, 426.$ 



Bronnii, 449, 464. 



Keuperiana, 438. 



minuta, 426,* 436.* 

 Posidonia schists, 449. 

 Post-meridian series, 379. 

 Post-tertiary period, sub- 

 divisions of, 535. 



geographical progress in, 

 546, 552, 568. 



change in the system of 

 geological progress in- 

 troduced with, 535, 569. 



elevated beaches of, 549. 



fossils of, in Canada, 552. 



in Europe, 558. 



lacustrine formations,548. 



life of Australia, 566. 



mammals cotemporane- 

 ous with man, 576, 577, 

 578, 581. 



mammals of Europe, 559. 



mammals of North Ame- 

 rica, 561. 



