INDEX. 



817 



Pemphix Sueurii, 428,* 429. 

 Pennant, 347. 

 Pennine fault, 399. 



range, 346. 

 Pennsylvania, Archaean in, 150. 



Black River in, 184. 



Oalciferous in, 184. 



Carboniferous in, 291, 309, 

 320,321,355,368,647. 



Catskillin,2S0. 



Cauda-galli grit in, 256. 



Chazy in, 182, 184, 185. 



Chemung in, 276. 



Cincinnati in, 197. 



Clinton in, 220. 



coal-field, map of, 310.* 



faults in, 399. 



Hamilton in, 267. 



Lower Helderberg in, 237. 



Lower Silurian In, 210. 



map of axes of flexures in, 

 397.* 



Medina in, 218. 



Millstone grit in, 320. 



mineral oil in , 268. 



Niagara in, 220. 



Oneida in, 218. 



Potsdam in, 168, 181. 



Quaternary in, 528. 



section of rocks of, 375. 



Subcarboniferous in, 293, 295, 

 297, 305. 



Trenton in, 194. 



Triassic in, 404, 405, 419. 



Upper Helderberg in, 256. 



Utica in, 196. 

 Pentacrinus, 432, 437. 



asteriscus, 432 * 433. 



hasaltiformis, 448. 



Briareus, 448. 



Caput-Medusae, 118.* 



Pittoni, 476. 

 Pentamerella arata, 261. 

 Pentamerus, 171, § 228. 



Barrandei, 206. 



brevirostris, 248. 



conchidium, 230, 249. 



elongatus, 261. 



galeatus, 237, 239 * 240, 247, 

 248. 



globosus. 247. 



group, 164. 



Knightii, 245, 246,* 247, 248. 



lens, 208. 



levis, 248. 



oblongus, 206, 208, 224,* 228, 

 229, 230, 247, 248. 



pseudo-gaieatus, 237, 239,* 

 240. 



range of, in time, 386.* 



reversus, 206. 



undatus, 208. 

 Pentamerus limestones, 164, 



237. 

 Pentremital group, 294. 

 Pentremitas, 129, § 190, 260, 

 284, 288, 297. 



florealis, 298,* 303. 



Godonii, 29S* 303. 



pyriformis, 298,* 302. 



range of, in time, 386.* 



Woodmani. 303. 

 Peperino, 66. § 

 Perch, 474, 475. 

 Percy, analysis of coal, 316. 

 Peridotyte, 72,§ 78, § 707, 736. 

 Periods and Epochs, 138, 141. § 

 Perissodactyls, 504. § 

 range of, in time, 589.* 



52 



Permian period, 291, 367. 

 Permian and Carboniferous con- 

 formable, 402. 



and Carboniferous uncon- 

 formable, 402. 



in analogous situations in 

 America and Russia, 370. 

 Perna Mulleti, 475. 

 Perrey, A., on earthquakes, as 

 evidence of internal waves, 

 743. 

 Persea, 497. 

 Persia a plateau, 22. 

 Peru, Cretaceous in, 470. 



earthquakes in, 662, 742. 



Jurassic in, 433. 

 Petalodonts, 304, 336. 

 Petalodus, 304, 342. 



destructor, 336,* 343. 

 Petalorhynchus, 304. 

 Peters, analysis of coals, 316. 

 Petersen and Schodler, analyses 



of wood, 361. 

 Petherwin group, 282. 

 Petraia, 204. 



aperta, 202. 



bina, 247. 



corniculum, 199,* 202. 



gracilis, 206. 



profunda, 202. 



subduplicata, 207, 208. 

 Petricola, 483, 608. 

 Petrifactions, 47,§ 615, 693. 

 Petrified turtles, 88. § 

 Petrodus occidentalis, 536,* 343. 

 Petroleum, 197, 222, 256, 268. 

 Petrosilex, 68,§ 70.§ 

 Phacops, 174,§ 204, 208, 228, 

 240, 243, 249, 253, 285. 



bufo,261,273,*274. 



caudatus, 247. 



Dowuingii, 250. 



limulurus, 248. 



Orestes, 206. 



rana, 274. 

 Phanerocrystalline, 64. § 

 Phanersstomum senarium, 466. 

 Pharella Dakotensis, 468. 

 Phascolotherium Bucklandi, 



447, 448,* 449. 

 Phenogams, 133. § 

 Philippine Islands, hot springs 



in, 612. 

 Phillips, J., on Jurassic Rep- 

 tiles, 444. 

 Philipsastrea Verneuili, 259,* 



261. 

 Phillipsia, 304, 308. 



Cliftonensis, 342. 



major, 342. 



Missouriensis, 342. 



pustulata, 308. 



range of, in time, 388.* 



scitula, 342. 



seminifera, 308.* 

 Phlogopite, 54.5 

 Phoca, 520.§ 



Wymani, 511. 

 Pholadomya ambigua, 448. 



cuneata, 518. 



fidicula, 449. 



gibbosa, 449. 



occidentalis, 469. 



orhiculata, 432. 



papyracea, 468. 

 Pholas, 475. 608. 



crispata. 519, 551. 



lata, 519. 

 Phonolyte, 77, § 707. 



Phosphatic beds, 495. 

 | nodules, 61, 67. 

 I rock -material, 59, 60, 613, 



695, 696. 

 Phosphatic impurity of ocean, 



593. 

 Phosphoric acid in ash of plants, 



61. 

 Phragmites (Eningensis, 498. 

 | Phragmocone, 432. § 

 [ Phragmoceras, 203. § 



immaturum, 203. 

 Phronima, 611. 

 Phyllograptus, 207. 



typus, 187,* 190. 

 Phyllopods, 122, § 227, 342, 592, 

 595. 



range of, in time, 388.* 

 Phyllopteris, 348. 

 Physa, 508, 617. 



heterostropha, 341, 548. 

 Physeter, 520. § 

 Physiography, 2.§ 

 Physiographic Chart, 11, 41, 

 583. 



Geology, 7,§ 9. 

 Phytolitharia, 632.* 

 Picrvte, 72. § 



Pictured rocks, 168, 181, 184. 

 Pierre-a-bot, 533. 

 Pierre group, 456. 

 Pillared rocks, 168. 

 ; Piloceras, 250. 

 Pine, 594. 609. 

 Pinites, 371. 



Brandlingi, 331. 

 Pinna, 385. 



affinis, 518. 



folium, 429. 



Missouriensis, 303. 



peracuta, 342. 

 Pinnotheres, 372. 

 Pinnularia, 348. 



aequalis, 634.* 



borealis, 634 * 



peregrina, 134,* 496.* 



viridis, 634.* 



viridula, 634.* 

 Pinus abies, 362, 365. 



larix, 362. 



picea, 362. 



Strobus, 134.* 

 Pisolite, 86.§ 

 Pistosaurus, 428, 429. 

 " Pitch" of rivers, 636- 

 Pitchstone, 77 § 

 Pith of Conifers, 331. 

 Pithecus, 520. 

 Pittsburg coal-bed, 312, 313, 



321, 331. 

 Placoderms, 264, §* 284. 

 Placodus, 429. 



impressus. 429. 

 Placuna scabra, 456. 

 Placunopsis, 342. 

 Plagiaulax, 428,§ 448. 



Becklesii, 450. 



minor, 450. 

 Plagiostoma gigantea, 438,*448. 

 Plains, 15. 



Plan in the earth's features, 46. 

 Planerkalk, 470. 

 Plane tree, 458, 497, 515. 

 Planing of rocks. See 



Scratches. 

 Planorbis, 450, 482, 617. 



bicarinata, 548. 



discus, 519. 



euomphalus, 519. 



