INDEX. 



759 



Peckforton Hills, Salop, copper ore in New Red Sandstone, 39, 

 298, 713. 



Pecknall, Salop, Lower New Red Sandstone, 63. 



■ , section of, 713. 



Pell Radely, Salop, trap of the Shelve Hills, 282. 

 Pembrokeshire, sections of (PI. 35.), 721 et seq. 



, Coal or culm Measures, 374, 379. 



, Carboniferous Limestone, 160, 161, 380. 



, Old Red Sandstone, 171, 384. 



, Silurian and Cambrian Systems, 81, 196, 389. 



■ , trap rocks, 401. 



, conflicting directions of the strata, &c, 406. 



, lines of drainage and superficial detritus, 511, 



520. 



, blown sands and submerged forests, 562. 



Penally, Shelve, Salop, lead mines, &c, 280. 

 Pen-cae-sarah, Caermarthenshire, veins of lead and copper ore, 

 365. 



Pen cerrig-calch, outlier of carboniferous limestone and mill- 

 stone grit, 162, 163, 168, 184, 517. 



, section across (PI. 31. f. 1.), 716. 



Pen-cerrig, Radnorshire, intrusive trap (sketch), 332. 



Pen-coed-y-gaer, Oswestry, carboniferous limestone and por- 

 phyritic trap, 145. 



Pen-coed and other hills, Caermarthenshire, Llandeilo Flags, 355. 



Pen-gaer, Pembrokeshire, Llandeilo Flags, 597. 



Penkridge, line of fault of Staffordshire coal-field near, 504. 



Pennant, Mr., on the last battle of Caractacus, xxxi. 



Pennsylvania, Corydalis of, 104. 



Pennyholt Stack, Pembrokeshire (PI. 35. f. 1.), 371, 720. 

 Pennystone coal measures (Coalbrook Dale), 103. 

 Penrose, near Usk, bowlders and gravel, 441, 518. 

 Pensarn, Caermarthen, Llandeilo fossils, 635, 664. 

 Pensax coal-field, Salop, 134, 410. 

 Pensnet Chace, Dudley, mineral springs of, 506. 

 Pentelow Brook, Woolhope, 432. 



Pentland, Mr., fossil fishes of, by Gamrie, described by, 601. 



Peploe, Mr., his park near Weobly, 177. 



Perthshire, fishes in Old Red Sandstone of, 601. 



Petroleum. See Bitumen. 



Peyton, Mr., of Dudley, his fossils, 492. 



Phillips, W. Mr., geology of England and Wales, 3. 



Phillips, Mrs. Thomas (drawing by), 78. 



Phillips, Dr. C, on the Ardwick limestone and coal measures 



of Manchester, 86. 

 Phillips, Sir Thomas, Bart., M.P., Picton Castle, 372. 

 Phillips, Professor, geology of Yorkshire, 13, 104, 160. 

 , lias in Yorkshire, 16. 



, on the Ardwick limestone and fossils, 49, 84, 



86, 87, 94. 



, on the Lower New Red Sandstone, 50. 



, on the basalt of Durham and Northumberland, 



77. 



, on faults, 116. 



, the fossils of the Carboniferous Limestone, 4, 



161, 384, 581, 648. 



, on joints, 244, 247, 729. 



, on the Brecon anticlinal, 339. 



, on raised beaches, 546. 



, on fossil shells, 586, 619, 623. 



, on trilobites, 648. 



, on crinoidea, 671. 



Pickering, Mr., 148. 



Picton Castle, Pembroke, culm tract exposed near, 372. 



Pirn Hill, Salop, axis of New Red Sandstone, 41, 296, 297(P1. 32. 

 f. 8.), 718. 



Pinsley River, Herefordshire, limpid water of, 251. 

 Pipe-clay, deposit of (tertiary?) in Pembrokeshire, 521. 

 Piper's Brook, Worcestershire, travertine deposits of, 565, 566. 

 Pirton, near Tewkesbury, lower lias, 20, 21. 

 Pit-leases, Newent, New Red Sandstone, conglomerate, and 

 coal, 51, 154. 



Pitchford, Salop, Lower New Red Sandstone at, 62, 63. 



, coal, petroleum, and Cambrian rocks, 93, 94, 727. 



Pitchstone of Arran, 499. 



Plants of the Wealden formation, 150. 



of the Oolitic System, 150. 



of the Keuper, 44. 



of the New Red Sandstone, " Bunter Sandstein," 42, 



43, 44, 65. 



of Lower New Red Sandstone, 56, 63. 



of the Coal Measures of the central counties, 85, 100, 



116, 148, 474. 



' of Devon and Pembroke,85, 379. 



of the Old Red Sandstone, 191. 



of the Silurian System (fucoids), 199, 698. 



Plaxton, Rev. R. G., on the " Wild or Weald Moors," 559. 

 Playfair, Professor, geological views of, 73. 

 Plealy Banks, Salop, 263. 



Plectrodus, new genus of fossil fish in Upper Ludlow Rock, 



605, 606. 

 Pleydell, Rev. C, 560. 



Plinlymmon, source of Severn and Wye, 317, 511. 

 Poikilite, term for the New Red Sandstone, 26, 445. 

 Poland, old rocks in, 7, 170. 



Polymeres, a new genus of nondescript animal, 698. 

 Pomona (Orkney), fossil fish in Old Red Sandstone, 601. 

 Pompren-arreth, Caermarthenshire, Llandeilo Flags, 355. 

 Pontesbury, near Shrewsbury, coal-field of, 81 et seq. 



, breccia of quartz rock at, 285. 



, section of coal strata near, 714. 



Pontesford Hill, trap rocks and lines of eruption, 263, 264,267, 

 286. 



Pont-ar-lleche (near Llangadock), tilestone and cornstones 

 (PI. 34. f. 5.), 167, 175, 181, 182, 348, 720. 



Pont-y-gwasted, Caermarthenshire, glazed limestone, 166. 



Pont-y-pool, section from near (PI. 36. f. 23.), 724. 



, bowlders of coal-field, 517, 518, 561. 



Pool Hayes, Dudley, greenstone and fissures, 501, 502, 506. 



Poorfield Common, Haverfordwest, carboniferous limestone and 

 millstone grit, 380, 395, 721. 



Porites, new genus of coral, 686. 



Porkington, near Oswestry, millstone grit, 144. 



Porphyry defined, 69. 



Porth-y-wain, near Oswestry, carboniferous limestone, 145. 

 Portlock, Capt., Silurian fossils in Ireland, 659, 695. 

 Pouk Hill, Wolverhampton, trap of, 501, 506, 507 (PI. 37. f. 3.), 

 725. 



Powick, Worcester, detritus, shells, and bones at, 525, 532, 

 534, 554, 556. 



Powis Castle, Silurian Rocks near (PI. 32. f. 9.), 254, 290, 301, 



303, 718. 



, fossils, 637 et seq. 



Powis, Earl of, the Longmynd, 257. 



, Prolirnoor spring, 261. 



Pradoe, Salop, copper ores in New Red Sandstone, 39. 

 Precelly Mountain, Pembrokeshire, coincidences of cleavage, 



and bedding, and line of eruptive trap, 400, 402. 



5 d 2 



