792 



INDEX. 



Post-tertiary mammals of S. 

 America, 563. 

 terraces, 547.* 

 Pot-holes, 641.$ 

 Potamomya mactriformis, 



517* 

 Potassium, 53.$ 

 Poteriocrinus longidactylus, 

 162. 

 Missouriensis, 162, 312.* 

 Potsdam and Calciferous only 

 one period, 204. 

 Period, 171. 

 American, 172, 178. 

 European, 177, 193. 

 green-sand of, 174. 

 igneous action in, 195. 

 life of, all marine, 179. 

 minerals of, 177. 

 recent genera in, 186. 

 beds, thickness of, 172,386. 

 beds overlaid by Carbo- 

 niferous, 245. 

 beds overlying the Azoic 



unconformably, 172. 

 fossils in Carboniferous, 

 325. 

 Pourtales, on occurrence of 

 Rhizopods, 612, 664. 

 on origin of green-sand, 

 749. 

 Pozzuolana, 74.$ 

 Pozzuoli, change of level at, 



588* 

 Prairies, distribution of, 45 

 Prehnite, 62.$ 

 Pre-meridian series, 379. 

 Prestwich, on human relics 

 found with remains of 

 extinct mammals, 5S2. 

 Primal series, 379. 

 Primordial period, 171. 



reality of, in America, 



203. 

 European, 177. 

 Prince Edward's Island, Car- 

 boniferous in, 324. 

 Edward's Island, Triassic 

 in, 416. 

 Prionastrea oblonga, 458.* 

 Prionodon in California, 521. 

 Priscodelphinus grandaevus, 

 478. 

 Harlani, 478. 

 Proboscidia, 423.$ 

 Proboscidians, range of, in 



time, 572. 

 Procamclus, in U. Missouri, 



522 

 Productus, 184,*$ 272, 376. 

 asquicostatus, 371. 

 Cora, 348. 

 costatus, 357. 

 elegans, 314. 

 Flemingii, 314. 

 horridus, 374. 

 longispinus, 319,* 357/362. 

 Martini, 316, 362. 

 muricatus, 348. 

 punctatus, 314 * 348. 

 Rogersi, 348,* 371. 

 scabrictilus, 357. 

 semireticulatus, 348, 362, 

 371. 



Productus subalatus, 284.* 



sulcatus, 362. 



first of, 303. 



last of, 374. 

 Proetus crassimarginatus,275. 



Stokesii, 261. 

 Progress of life the basis of 

 subdivisions into ages, 

 115, 123. 



of life, system of, in geo- 

 logical time, 592. 



of life, law of specializa- 

 tion connected with, 

 599 

 Propalseotherium, 529. 

 Prosoponiscus problematicus, 



375. 

 Protaxites Logani, 283. 

 Proteus, 344.$ 

 Protichnites, 185.* 



7-notatus, 189. 

 Proterosaur, 34C,$ 376.$ 

 Proterosaurus Speneri, 375.* 

 Protogine, 81.$ 

 Protomeryx, in U. Missouri, 



519. 

 Protophytes, 167.$ 748.$ 



Cretaceous, 481. 



Palaeozoic, 270.* 



Tertiary, 524. 



the earliest life, 596. 

 Protozoans, 152,g 103.$ 748. 



classification of, 748. 



in Tertiary, 514. 



the earliest life, 596. 

 Protozoic schists, 178. 

 Psammobia lintea, 517.' 

 Psaronius, 355, 374.$ 

 Pseudoliva vetusta, 517. 

 Pseudomorphism, 704.$ 

 Psilophyton princeps, 283. 

 Pterichthyds, 279,$* 302. 

 Pterichthys Asmusi, 298. 



Milleri, 29S.* 

 Pteroceras, first of, 453. 

 Pterodactyl, 346,$ 452, 501. 

 Pterodactylus crassirostris, 

 452,402*465. 



giganteus, 482. 



range of, 487. 

 Pteronites Chemungensis, 



290* 

 Pterophvllum graminoides, 

 419.* 



Ja^geri, 434,* 438. 



longifolium, 419, 420, 438. 



Munsteri, 438. 

 Pteropods, 156,$* 187.* 



culmination of, 397. 



in green-sand, 217. 



range of, in time, 401. 

 Pterosaurs, 346,$ 452. 



range of, in time, 572. 

 Pterygotus, 255.$ 



bilobus, 264* 

 Ptilodictya fenestrata, 210.* 

 Ptychodus, 473.$ 



Mortoni, 478.* 

 Pudding-stone, 73.$ 

 Pulaski shales, 750 

 Pumice, 88.$ 

 Pupa, 367.$ 399. 



vetusta, 346, 349* 

 Purbeck beds, 448. 



Purpura, 460.$ 



Purpuroidea nodulata, 459, 



464. 

 Putorius, 529.$ 

 Pycnodonts, 280.$ 



in the Tertiary, the last 

 of, 526. 

 Pycnodus gigas, 436, 462. 

 Pygaster patelliformis, 465. 

 Pygidium, 188.$ 

 Pygocephalus Couperi, 358. 

 Pyramids of Egypt, rock of, 



524. 

 Pyrenean basin, 481. 

 Pyrenees, elevation of, 533. 

 Pyrites, copper, 64.$ 



iron, 64.$* 



iron in coal, 329. 

 Pyrophyllite, 62,$ 83.$ 

 Pyroxene, 60.$* 

 Pyroxenite, 78.$ 



Quadersandstein, 480. 

 Quadrumana, 422.$ 



range of, in time, 572. 

 Quartz, 55.$* 



crystals in Arkansas, 322. 



crystals in Calciferous 

 sandrock, 175. 

 Quart zite, 55,$ 83.$ 

 Quaternary. See Post-ter- 

 tiary. 

 Quebec group, 175. 

 Quercus myrtifolia, 514.* 

 Quito, plateau about, 22. 



Radiates, 147,$* 158.$ 



number of living, 575. 

 Raccoon, 422.$ 

 Kadiolepis speciosus, 427. 

 Radiolites, 472. 



Austinensis, 474. 



Rournoni, 484.* 



lamellosus, 474. 



Mortoni, 482. 

 Raft of the Red River, 644. 

 Rain, causes influencing the 



amount of, 46. 

 Rain-prints, 95.$ 

 Ramsay, on glacial scratches 



of Catskill Mts, 751. 

 Randanite, 67.$ 

 Raniceps Lyellii, 350* 

 Rauchwacke, 372. 

 Rays, 277.$ 



Receptaculite limestone, 383. 

 Receptaculites Neptuni, 224, 



262. 

 Red River, raft of, 644. 

 Reefs. See Coral. 

 Regelation, 674.$ 

 Rensselaeria, 181.$ 267. 



ovoides, 267.* 

 Rensselaerite, 81.$ 



a result of metamorphism, 

 711. 

 Reptilian Age, 414. 



contrast of, with the pre- 

 sent in life, 499. 



footprints. 299, 315,* 424* 

 436,* 438.* 

 Reptiles, 152.$ 



number of living, 575 



classification of, 343.$ 



