IXDEX. 



797 



Phascolotherium Bucklandi, Stonesfield, 409. 

 PhasianeUa Heddingtonensis. Coral-rag, 39. 

 Philippi, on tertiary shells of Sicily, 192. 

 Phillips, Prof., on coal-bearing strata, 465. 



on Wenloek shale, 559. 



on slaty cleavage. 749. 



Phillips, Mr. "W"., onkaolin of China, 11. 



PJblebopteris contigua, Lower Oolite, 411. 



Pholadornua Jidicula, Inferior Oolite, 412. 



Phonolite, 599, 606. 



Phorus ei'tensus. Hiskirate, 293. 



Phosphate of lime, 332. 



Phragmoceras ventricosum, 554. 



Phn/ganea. larva of recent. 226. 



Phyilade. 736. 



Physa columnar!-?. P. hypnorum (recent), 29. 



Bristovii, Middle Purbeck. 331. 



Pico Torres, etc.. of Madeira, 643. 



Pictou. calamites near, 491. 



Pile-dwellings of stone and bronze age, 111. 



of Switzerland, 110. 



Pilton group, fossils of, 536. 

 Pinnularia, Atlantic mud. 320. 

 Pinus sylvestris in peat, 109. 

 Pisolitic limestone, Prance. 313. 

 Pitchstone, 606. 

 Placodus gigas. teeth of. 439. 

 Placoids of Wealden. 349. 



scarcity of, in Old Bed strata. 532. 



Plagiauhix BecMesii. jaw of, Middle Pur- 

 beck. 333. 



manor, jaw of, Middle Purbeck, 8S4. 



Plagiostoma gigant&um, 417. 



Hoperi, White Chalk, 327. 



Planer a Bichardi, GEninaen, 266. 



Planitz, tripoli of, 26. 



Planorhis discus, Bembridge, 232. 



euompJialus, 29, 254. 



Plants common to Eocene and Miocene, 295. 



fossil, of Madeira, 649. 



fossil, of Switzerland, 260. ■ 



of Purbeck beds, 394. 



of the Keuper, 434. 



Plas Xewydd, rock altered by dike near, 613. 

 Plastic clays and sand, 295. 

 Platanusaceroid.es, CEningen, 254. 

 Platystoma Suessii. Hallstadt, 436. 

 Playfair, cited, 45, S3. 



on faults, 61. 



on Huttonian theory of stratification, 60. 



Plectrodus mirabilis, Upper Ludlow, 552. 

 Pleistocene, term, why abandoned, 107. 

 Plesiosaurus dotichodeirus, Lias. 423. 

 Pleurod ictyuru problematicum, 541. 

 PleurotomO; attenuata, 290. 



rot at a, 31. 



Pleurotomaria carinata {flammigera), 513. 



Anglica, 39. 



granulata. Inferior Oolite, 412. 



ornata. Inferior Oolite, 412. 



Plieninger, Prof., on triassic mammifer, 432. 

 Pliocene, term explained, 1S8. 



Older, volcanic rocks, 673. 



strata in Ischia, 159. 



period, 178. 



volcanic rocks, why invisible, 718. 



Plomb du Cantab igneous rocks of, 691. 

 PlombKres, alkaline waters of, 740. 

 Ploverfield, fine-grained granite of, 723, 729. 

 Plumbago of Massachusetts, 743. 

 Plutonic rocks, 7. 



action, 740. 



carboniferous, 725. 



cretaceous, oolitic and liassic, 727. 



of the Andes, 721. 



rocks, origin of name, 702. 



Silurian. 725. 



test of aire of, 717. 



Pluvial action on chalk, 365. 

 Podocarya, portion of fruit. 410. 

 Podogonium Knorrii, CEningen, 251. 

 Poikilitic, term explained. 432. 

 Polycailia profunda, Permian. 515. 

 Polypierui. living, in the Nile, 532. 

 Pomel, M., on fossil of Mont Perrier, 687. 



Pompeii, bronze instruments found at. 112. 



Ponza Islands in Mediterranean, 619. 



zoned structure of trachyte in, 752. 



Ponza, Isle of, globular pitchstone in, 619. 



Ponzi, Prof., on Subapennine strata, 209. 



Porphyritic granite, 707. 



Porphyry, 600. 



Portland, Isle of, fossil forests in, 391. 



stone and sand, 394. 



Port Moniz, surface of lava at, 654. 



Porto da Cruz, trachytic tuffs of, 652. 



Porto Santo, Madeira, Upper Miocene shells 

 of, 674. 



Posidonia minuta, Muschelkalk, 439. 



Posidonoraya BecJieri, 522. 



Post-pliocene period, human remains of, 113. 



mammalia, teeth of, 133. 



lakes of Switzerland, 173. 



valley drifts of, 114. 



volcanic rocks, 661. 



strata, 107, 113. 



Potamides cinctus, 30. 



Potsdam sandstone, 5S1. 



Potstones at Horstead. 323. 



Pottery in upraised strata, 121. 



Pottsville, coal-seams near, 499. 



footprints of reptiles near, 509. 



Powrie, Mr., on Cephalaspis beds, 531. 



Pozzolana, 36. 



Prasias, Lake, lake-dwellinss in, 110. 



Pratt, Mr., on fossils of Oxford clay, 400. 



on Isle of Wight mammalia, 233. 



Precipitation of mineral matter, 41. 



Predazzo, altered rocks at, 724. 



Prestwich, Mr., on island in Eocene sea, 367. 



on Barton clay shells, 287. 



on Blackheath shingle, 296. 



on Eocene strata, 369. 



on shells of London clay, 292. 



on "Weald denudation, 367. 



on iron-sands, 235. 



on Calais flint-breccia, 374. 



on cave and drift fossils, 129. 



on coal-measures of Coalbrook Dale, 62. 



on Sables de Bracheux, 337. 



Prevost, M. Constant, on fauna of Montmartre, 

 299. 



Prevost, M., on Paris basin, 299. 



Primary Limestone, 736. 



•• Primary " schists, composition of. 744. 



Primordial zone of Barrande, 573, 579. 



Productus liorridus, 460. 



semireticulatus (antiquatus), 517. 



Progressive development and oldest fossil fish, 

 533. 



Proteacese, species in Lower Molasse, Switzer- 

 land, 261. 



Protogine, 708, 736. 



Protrusion of solid granite, 727, 731. 



Psammodus porosus, 521. 



Psaronius in Permian of Saxony, 464. 



Pseudocrinites bifasciatus, Wenlock, 558. 



Psilophyton princeps, Devonian, 548. 



Pteraspis in Lower Ludlow shale, 555. 



Pterichthys, Old Eed Sandstone, 534. 



Pterodactyl, gigantic size of, 331. 



PterodactyJus~crassirostris, Solenhofen, 396. 



Pieropliyllum comptum, Gristhorpe, 411. 



Pterygotus anglicus, 523. 



Ptychodus decurren's, Chalk, 330. 



Puggaard, M., on strata of Ischia, 190. 



Pulvermaar of Gillenfeld, lake of. 681. 



Pumice, 602, 606. 



Pupa muscorum, Ehine, 119. 



vetusta, Coal, 512. 



tridens, 30. 



Purbeck, Lower, shells of, 389. 



beds, 377, 379-394. 



fossil mammalia of, 331. 



marble, 330. 



Middle, shells of, 380. 



Upper, shells of. 379. 



Purity of coal, causes of, 490. 



Purpura tetragona, Bed crag, 202. 



Piupuroidea nodulata, Great Oolite, 405. 



