760 



INDEX. 



Prees (Salop), marlstone of Lias at, 22 — 26. 



; section at, 714. 



— , detritus and gravel, 527. 



Prendergast, Pembrokeshire, Caradoc sandstone of, 398. 

 Prescoed, near Usk, Silurian Rocks elevated, 439, 440, 441, 549. 



, Lower Silurian fossils, 641. 



Prescot Bridge (Salop), Old Red Sandstone, yellow variety, 

 136, 174, 194. 



Presteign, outliers of Old Red Sandstone near to, 191, 192. 

 , Ludlow Rocks at, 311. 



, fossils of Silurian Rocks near, 610 et seq., 618. 



, denudation of valley, 313, 551. 



, sections near (PI. 33. f. 2 et seq.), 718. 



Preston Boats, Shrewsbury, Lower New Red Sandstone and 

 cornstone, 62. 



Preston, Lancashire, shells in gravel with granitic blocks, 534, 

 535. 



Preston Hall, near Shrewsbury, gravel, &c, 526. 

 Prestwich, Mr. Joseph, Map of Coal Brook Dale, xxix. 

 , plants in the Lower New Red Sand- 

 stone, 61. 



, on Coal Brook Dale, 62, 86, 99, 100, 



211, 475, 526, 627. 



, on fossil crustaceans, 647. 



, on the raised beaches of Banffshire, 



546. 



, memoir on Gamrie referred to, 601. 



Prevost Constant, M., " Notes sur l'lsle Julia," 72. 



, on craters of elevation, 427. 



Price, Mr. R., M.P., of Norton Ruralt, 192. 



Primrose Hill, Wrekin (wood-cut), syenite, 232, 233. 



Prior's Court, Herefordshire, Silurian Rocks, 432. 



Prior's Lee, Coal Brook Dale, faults and petroleum, 100, 103. 



Proctor, Mr., Silurian shells collected by, 621. 



Prolimoor, mineral spring, probable origin of, 261. 



■ — , coarse drift lodged at, 514. 



Protozoic Rocks, or ancient fossiliferous strata, 11, 12. 



Prout, Dr., analysis of Ludlow coprolites, 199, 607. 



Prussia, transported blocks in the plains of, 542. 



Pryce, Miss, collection of Silurian fossils, 642. 



Pterygodus, fossil fish in Upper Ludlow Rock, 605, 606. 



Ptilodictya, a new genus of corals, 676. 



Ptychacanthus, ichthyolite in Old Red Sandstone, 589, 597. 



Pulverbatch, coal resting on Cambrian Rocks, 94, 256, 258. 



Purton Passage, on Severn, Old Red and Upper Silurian Rocks 

 at (PI. 36. f. 17.), 446, 450, 453 et seq., 724. 



Pusch, M., on Old Red Sandstone in Poland, 170. 



Pwll-calch (near Myddfai), Caermarthenshire, Wenlock lime- 

 stone, 348, 349. 



Pyon Hills, Herefordshire, denudation of, 177, 516. 



Pyramidal masses of trap in Skye, 499. 



Quadrupeds terrestrial, bones of in Siluria, 553. 



, in the Avon valley, Worcestershire, 554. 



Quartz Rock, an altered sandstone in Siluria, 137, 220, 226, 233, 



279, 283, 296, 363, 404, 418, 495. 



at Bromsgrove Lickey, 492. 



Queen's Wood, Herefordshire, Silurian Rocks, axis of Woolhope, 



442. 



Quenstedt, Dr., on trilobites, 646. 



Radnor, vale of (PI. 33. f. 4.), 314, 551, 719. 



Radnor Forest, Ludlow Rocks (PI. 33. f. 4.), 315, 617, 718. 



Radnor Wood, upcast of Old Red Sandstone, &c, 322. 



Radnorshire, volcanic grit alternates with Lower Silurian Rocks, 



77, 324 et seq. 



, Silurian Rocks of, 184, 311 et seq. 



, trap and altered rocks of, 317 et seq. 



Ragged Stone Hill, Malverns, Caradoc sandstone, 416. 

 Ragland, Monmouthshire, Old Red Sandstone, 439, 441. 



, detritus near, 518. 



Raised beaches on the British coasts, 546. 



Ramsey, Island of, Pembrokeshire, trap, 402. 



Ratlinghope, Salop, Cambrian and trap rocks with copper ore, 



256, 258, 260 et seq. 

 Raven's Causeway, Herefordshire, Old Red Sandstone, 177. 

 Red marl. See Kenper. 



with shells at Manchester (age of magnesian lime- 

 stone), 49. 

 Rees, Mr. W., of Llandovery, 348. 



Reeves Hill, Salop, Ludlow Rocks and Old Red Sandstone, 192. 

 Rhayader or Rhaydr, slates of (PI. 33. f. 7.), 317, 720. 



, detritus of, 515. 



Rhine, " loess " of, 557. 



Rhiw-felig, Caermarthenshire, Lower Silurian Rocks, 351. 

 Rhiw-frenin Hill, near Builth, fossils of the Ludlow Rock, 340. 

 Rhiw-goch, Radnorshire, absurd trial for coal, 330. 

 Rhi-wannest, Brecknockshire, Ludlow fossils, 611. 

 Rhiw-lais, Usk, tilestones of Old Red Sandstone, 439. 

 Rhiw-yr-adar, Caermarthenshire, passage from Silurian to Cam- 

 brian, 357. 



Rhone Hill, Ireland, fishes in New Red Sandstone of, 43. 

 Rhosmaen Common, Radnorshire, druidical circle on, 327. 

 Rhyd-cwm, Salop, vegetable fragments in Old Red Sandstone, 

 191. 



Ribbesford Woods, near Bewdley, conglomerate in coal mea- 

 sures, 134. 



Richard's Castle, near Ludlow, junction of Old Red Sandstone 

 and the Silurian System, 181, 197, 199, 238. 



, fossils of Ludlow Rocks, 010 et seq. 



Richardson, Dr., North American lakes, 149. 



Ridge Hill, Worcestershire, dislocations of Silurian strata, 422. 



Ridgeway, near Bristol, carboniferous limestone, 461. 



, elevation of, 569. 



Ripple on the Severn, Keuper Sandstone, 29. 



Ristley Wood, Newent, Wenlock Limestone, 442. 



Ritton Castle and Shelve, Salop, bedded trap rocks and shale, 

 276, 282. 



Rivers flowing through transverse fractures, 239, 432, 441, 511, 

 519, 529. 



carry vegetable matter to the sea, 149. 



, ancient, deposits of, 549, 554. 



. , modern, action of, 561. 



Robeston Wathen, Pembrokeshire, Llandeilo Flags and fossils, 

 396, 397, 637 ; coral at, 688. 



, fossils at, 636 et seq. 



Robin Hood's Bay, Yorkshire, basaltic dyke, end of, 76. 

 Robin Hood Hill, Gloucestershire, marlstone, 17. 

 Robison, Sir John, fossil fish procured by, 599. 

 Roche Bridge, Pembrokeshire, culm measures, 379. 

 Roche Castle, Pembrokeshire, trap ridge, 402. 

 Rock, Salop, coal measures, 134. 



salt in saliferous marls of Worcestershire, 31. 



Rocke, Rev. J., of Clungunford, 205, 219. 



Rogers, Prof., Silurian fossils in the United States, 8. 



Roman mines at Shelve, Salop, 279. 



at Gogofau, Caermarthenshire, 368. 



Roman's Castle, Pembroke, trap, 403. 



