INDEX. 



737 



Bedded or cotemporaneous trap (see volcanic grit), 75. 



, age of, how determinable, 76. 



Begwm Hills, Radnorshire, tilestones and Upper Ludlow, 181, 

 312. 



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



Belem Bank, Shropshire, trap, 291. 



Bennett, Mr., of Dudley, east edge of Dudley coal-field, 475, 

 725. 



Bennett, Mr., on ice-floes, 541. 



BenthallEdge, Salop, Wenlock Limestone fossils, 236, 624 etseq. 

 Bentley Forge trap, Staffordshire, 501. 



Benton Castle, Pembrokeshire, trap ridges extending from, 403, 

 407. 



Berger, Dr., plants of the Keuper, 30. 



Berkeley, Old Red Sandstone and Silurian Rocks of, 446, 448, 



449, 454, 456. 

 Berriew, Montgomeryshire, Silurian strata, 301, 302. 

 Berrow Hill (trap, syenite and coal), 135, 419, 422. 

 Bertrand, M. de Doue, on the Puy en Velay, 375. 

 Bertrand, M., Revolutions du Globe, 435. 

 Berwyn Mountains, structure, range and relations, 256, 300, 



306, 568, 573. 



, section to (PI. 32. f. 9.), 718. 



, fossils of, 638 et seq. 



Best, Mr., of Corngreaves, 468, 473, 475, 499. 

 Bettws Disserth, Radnorshire, trap rocks of, 327. 

 Bewdley Forest, coal-field of, 131, 133, 135, 180, 571. 



New Red conglomerate, &c. (PI. 30. f. 2.), 53, 715. 



Bickerton Hills, Cheshire, New Red Sandstone, 298. 



Biddulph, Mr., Ledbury Park, 411. 



Biddulph, Mr. Ormus, fossils of, 414. 



Bigsby, Dr., on North American rocks, 8, 661. 



Bilberry Hills (Lower Lickey), 493. 



Bilhngsley coal and ironstone measures and their dislocations, 



131, 132, 135. 

 Bilston, part of Dudley coal-field, 465, 471, 472. 

 Meadow Pit, iron ore of, and section of lower coal, 



473, 478. 



Binney, Mr., Lower New Red Sandstone near Manchester, 49 

 note, 87. 



Birches, the, near Buildwas, Salop, landslip, 734. 



Birch Hill, Staffordshire, coal-field, description of, and sections, 



474, 479, 488, 501, 506. 

 Birmingham, grindstones used at, 60. 



, colliery near to, through New Red Sandstone, 64, 



508. Appendix. 



. , local detritus near to, 525. 



and Liverpool rail-road cuttings, 525, 729. 



Bishop's Castle, outlier of Old Red, near to, 190. 



, Trap and Silurian Rocks, near, 732. 



Bitterly Court, near Ludlow, Old Red cornstone, 180. 

 Bitumen from breccia at Pitchford, near Shrewsbury, 94, 



727. 



in coal measures of Coalbrook Dale, 103. 



in Wenlock Limestone, 214. 



in Cambrian Rocks, 260, 264, 732. 



, connexion of, with volcanic phenomena, 266, 732. 



Black Forest, Old Red Sandstone of (PI. 31. f. 1.), 162, 163, 



164, 173, 176, 184, 516, 716. 

 Black Knolls, Corndon, eruptive trap (wood-cut), 273, 274. 

 Black Mountain, Salop, fossils at, 622. 



Black's Well, Worcestershire, quarries of New Red Sandstone, 

 53. 



Blackwell, Mr., of Dudley, trilobite of, 474, 492, 652. 



Blaen cennen, Caermarthenshire, glazed carboniferous lime- 

 stone, 157, 165. 



Blaen-dyffrin-garn, Caermarthenshire, trap and altered sand- 

 stone (PI. 34. f. 5.), 354, 363, 720. 



Blaen eddw, Radnorshire, trap, Silurian shale, and mineral 

 waters, 324, 327. 



Blaen-y-cwm, Caermarthenshire, Lower Silurian Rocks and 

 fossils, 351, 642. 



Blaisden Edge, May Hill, Wenlock Limestone, 443, 444. 



Blakeney, Gloucestershire, N.E. of Woolhope, anticlinal, 446. 



Blocks, erratic, or bowlders, 535. 



, how transported, 536 et seq. 



Blorenge Mountain, hear Abergavenny, Old Red, carboniferous 

 limestone and millstone grit, 163, 171, 172. 



Bloxwich, coal and ironstone, 465. 



Blumenbach, Professor, on trilobites, 646. 



Boase, Dr., on Primary Geology, 243. 



Boblaye, M. de, on this work, 7. 



Bog (lead) mines, Salop, 280. 



, Caradoc fossils at, 639 et seq. 



Bogs, formation of peat, 559. 



Bohemian coal-fields, plants of, 85. 



Bohemia Old Red Sandstone and coal-fields, 170. 



Bolton Beacon, Pembrokeshire, trap rock of, 403. 



" Bone Well " near Ludlow, 250. 



Borle-brook, Salop, coal and Lower New Red Sandstone, 60, 131. 



, section of (PI. 30. f. 4.), 715. 



Bosheston Mere, Pembrokeshire, funnel in carboniferous lime- 

 stone, 383. 



Bostock, Dr., analysis of fish-spines, 598. 



Botfield, Mr., his coal-works through basalt, 114, 121. 



Botvyle or Botville. Salop, outlier of Ludlow Rocks, 231, 716, 



, fossils in, 



612. 



, section across (PI. 31. f.4.), 



615 et seq. 



Boue, Ami, M., Silurian Rocks in Servia, 7. 



, on the structure of Scotland, 74. 



, on parallel elevations, 570. 



Boughton, Sir W., Bart., cornstone and flagstone of Old Red 



Sandstone, 179 et seq. 

 Bouldon flagstones of Old Red Sandstone, 179. 

 Boulsdon, south of Newent, coal-pits at, 153, 154. 

 Boundaries of the Silurian Region, xxxi, 



Bowlders, large, how and whence transported, 535, 536 et seq. 

 733. 



Bowman, Mr., on millstone grit of Denbighshire and coal near 



Wrexham, 144, 148, 475. 



, map of Denbighshire coal-field, xxix. 



, on drifted materials 528. 



Boughton Hill, Lower Lias, 20. 



Bradeley, quarries of Wenlock Limestone, 212. 



Bradley, Richard, Prof., on floating icebergs, 539. 



Bradley Colliery, shaft section of the lower coal and ironstone, 



Staffordshire, 478. 

 Bradnor Hill, near Kington, 311. 



, fossils of Ludlow Rocks, 610 et seq. 



Bragginton, Shrewsbury, coal-field, 81 et seq., 713, 717. 

 Brampton Bryan, wood-cut of Silurian Rocks near, 239, 240. 

 Brand Hall, coal beneath Lower New Red Sandstone, 467. 

 Brand Lodge, quarries of Wenlock Limestone, 414, 424. 

 Bransill Castle, Malverns, fossil shells at, 641. 

 Brawdy, Pembroke, culm -field reposing on the Cambrian Rocks 



(PI. 35. f. 9.), 374, 398, 399, 721. 



