416 



INDEX. 



Peat of Loch Kinnordy, canoe in, 87 note. 



of the valley of the Kennet, 128. 



Pecten orbicularis, characteristic fossil of the 



Malm-rock, 99. 

 three new species of, in lias of Carsaig, 



Mull and Pabba, 367. 

 five species of, at Brora, of which two 



are new, 365, 366. 

 Pembroke : see Coal, Culm, De la Beche, 



Grauwacke, Limestone, Old red sandstone, 



Trap. 

 Pentamerus, casts of, at Norbury quarry, 244. 

 Knightii, detailed description of, 



247. 

 Pentland, J. B. Esq., on some fossil remains from 



Bengal, 393. 

 his description of the Ich- 



thyolites of Gamrie, 364. 

 Persoon, M., on Cycadeae, noticed, 396. 

 Petrolean wells found on the shores of the Ira- 



wadi, near Wetmasut, 378, 381, 386, 388 



note. 

 Pianura, feldspathose rock, compared with that 



of Rocca-Monfina, &c., 348. 

 Piperno used in building at Naples, 348. 

 Pisolites, formation of, 346. 

 Pitchstone passage into pumice, 344. 

 green and yellow, at the junction of 



the prismatic trachyte and semivitreous con. 



glomerate, Ponza, 206. 



in the Monte di Procida, 349. 



in trap dykes traversing lias and inferior 



and middle oolite, 359. 

 Plagiostoma, three species, Pabba, of which one 



species is new, 368. 

 Plants, fossil, from Isle of Portland, described hy 



Dr. Buckland, 395 et seq. 

 (fuci ?) impression of, in the slate clay at 



Leach Heath, 256. 

 monocotyledonous, portions of silicified 



stems of, in the lower beds of sandstone and 



shaly clay at Hastings, 35. 

 Plastic clay formation of the Irawadi district, 



388. 

 Pondicherry, tertiary deposits and silicified wood 



found at, 394. 



Ponza group, connection of the, with congene* 

 rous formations of the Italian coast, 232. 



geological description of, 197. 



Isles, analogy between the volcanic forma. 



tions of, and those of other countries, 225. 



G. Poulett Scrope, Esq. on the 



geology of, 195. 

 Porphyritic conglomerate, Jamaica, 163. 

 Portgower, Sutherland, remarkable dislocations 



at, with breccia of limestone and shale in con- 

 tact with granite, 305. 

 Portland cave, Jamaica, 185. 

 Port Royal mountains, Jamaica, red sandstone 



and conglomerate among, 163. 

 Portree, Skye, trap rocks at, 310. 

 Post-diluvian formations of the valley of the 



Kennet, 128. 

 Primitive rocks of Irawadi district, 389. 

 Prince's Cave, section of cliffs near, 360. 

 Prismatic trachyte, change observable at its point 



of contact with the semivitreous trachytic con. 



glomerate, Ponza, 204. 

 Procida, western point of, described, 343. 

 Producti in the limestone of the Pembroke band, 



16. 

 Prome, pillars of a house at, petrified, 391. 

 teak supposed to be silicified 



under a building near, 403. 



sandstone found near, 388. 



sandy limestone, 386. 



Pugan, sandstone found near, 388. 



slaty limestone, 386. 



Pullastra, new genus, Brora and Yorkshire, 



298. 

 Punt6 di Campanella, sandstone and tufa near 



the, 352. 

 Purbeck beds contain marine and freshwater 



shells, 40. 



fossil fish and turtles in, 40. 



junction of, with the Portland beds, 



41. 



limestone series, section of, 38. 



Pyrites, iron, in the lias formation of Lyme Regis, 



29. 



