GENEKAL INDEX. 



725 



Palaosaurus StricMandi, 420. 



Paris Basin, Rev. J. F. Blake on the 



Upper J urassic of the, 497. 

 Paris Mountain, area south of, 220 ; 



Mr. Allport on rocks from, 220 ; 



volcanic group of, 221. 

 Parkhead, sandstone from, 12. 

 Parkinson, 0., Esq., on Upper Green- 

 sand and Chloritic Marl, Isle of 



Wight, 370. 

 Patagonian archipelago, Soil-cap mo- 

 tion in the, 348. 

 Pays de Bray, Upper Jurassic rocks of 



the, 554 ; map of part of the, 556. 

 Peace River, British Columbia, 276. 

 Peat-bed interstratified with the 



Boulder - drift at Oldham, Mr. 



Hollingworth on a, 713. 

 Pelvis, Prof. Owen on the, of an Ano- 



modont Reptile, 266. 

 Pen bryn'r Eglwys, section from 



Porth-y-defaid to, 224 ; structure of 



granitoid gneiss from, 235. 

 Pen Rhiev Wen, section through, 143. 

 Penrith Sandstone, 287. 

 Pentewan, shore-sand from, 19, 25. 

 Pentraeth, gneiss south of, 211 ; 



structure of crystalline limestone 



from near, 235, 236. 

 Pen-y-Oarnisiog, Anglesey, Prof. T. G-. 



Bonney on a boulder of hornblende 



picrite near, 137. 

 Perisphinctes Martinsii, 601. 



pygmeeum, 601 . 



Permian, Lower, of the Carlisle basin, 



287. 



Permian, Upper, of the Carlisle Basin, 

 286. 



Permian rocks, of the Carlisle Basin, 

 Mr. T. V. Holmes on the, 286 . 



Permian Sandstones, constitution of, 

 12, 25. 



Perranzabuloe, constitution of grit 

 from, 10. 



Pertuis d'Antioch, map of the coast 



round the, 544. 

 Phillips, J. A., Esq., on the occurrence 



of remains of recent plants in 



brown iron-ore, 1, 

 , on the constitution and his- 

 tory of grits and sandstones, 6. 

 Picrite, hornblende, Prof. T. Gr. 



Bonney on a boulder of, 137. 

 Pikermi, 206. 

 Pisolitic iron-ores, 18. 

 Plan of limestone and quartzite at 



Inchnadamff, 243 ; of part of Rio 



Tinto, 3. 



Plants, Dr. Hicks on the remains of 

 some, near Corwen, North Wales, 

 482. 



Plasgoch, section in quarry at, 44 ; 

 analyses of rocks from, 45, note ; 

 microscopic character of rock from, 

 46. 



Plastremys lata, 370. 

 Plas uchaf, 220. 



Platypodosaurus robushcs, Prof. Owen 

 on the pelvis of, 266. 



Plesiosaurus brachycephalus, 476. 



conybeari, 440. 



megacephalus, 440. 



Plcuropeltus Suessii, 693. 



Plynlimmon, vertical section of Silu- 

 rian rocks at, 164. 



■ grits, 162. 



group, 156. 



Point JElianus, structure of slaty rock 

 from, 235. 



Pont Cletwr Yspytty, constitution of 

 grit from, 9. 



Erwycl, fossils from near, 152 ; 



section from, through the Plyn- 

 limmon axis to Llangwrig and 

 Rhyader, 159. 



Pont ur Elan, section through, 

 143. 



Pont-y-Gromlech, felsite schist from 

 near, 405. 



Popty, section through, 143. 



Porella denticulata, 336. 



emendata, 336. 



Porina clypeata, 332. 



columnata, 334. 



coronata, 332. 



Porthdinlleyn, Prof. Bonney on the 

 so-called serpentine of (Caernarvon- 

 shire), 40. 



Porth feiin, structure of chlorite- 

 schist from, 234. 



Porth lygan, 220. 



Porth JNTobla, coast-section from, to 



AberfFraw sands, 216. 

 Porth-y-defaid fault, 224 ; section 



from, to Pen bryn'r Eglwys, 224 ; 



structure of chlorite - schist from, 



234. 



Porth-yr-Ogof fault, 226 ; structure 

 of chlorite-schist from, 234. 



Portlandian of the Paris basin and 

 England, 585. 



Post-Tertiary sands, constitution of, 

 19. 



Psaronius textilis, 307. 



Purbeck beds, Mr. R. Ethe ridge on a 



new species of Trigonia from the, 



of the Vale of Wardour, 246. 

 Purbeck beds at Swanage, Mr. E. W. 



Willett on a mammalian jaw from 



the, 376. 



Quartzite and sandstone fossiliferous 



