INDEX. 



V s No organic remains are cited in the Index, except the genera of Fishes and Crustaceans, and the new genera of Shells and 

 Zoophytes, a reference to every fossil species which is figured being given in the table, p. 703, et seq. 



ABBERLY coal-field, 131, 134, 135, 420, 508. 



— ■ Hills, concretionary trap of, 53, 78, 138, 419, 



496. 



— , fossils at, 618. 



. , trappean conglomerates of, 53, 66, 67. 



f trap dyke connected with, 186 — 187, 420. 



. , Silurian Rocks of, 409 et seq. 



— ■ , inversion and dislocation of Silurian Rocks 



in, 420—425. 



, sections of (PI. 36. f. 1 to 4.), 722 et seq. 



, materials drifted from, 516. 



• , Wenlock Limestone of, 412. 



, Upper Silurian fossils of, 610 et seq. 



Abberley Lodge, Wenlock fossils at, 623 et seq. 



Abbey cwm-hir, Radnorshire, 316. 



Abbotsford Hill, Salop, granitic bowlders near, 536. 



Abdon Burf, Clee Hills, coal-field and basalt of (Section, PI. 30. 



f. 6.), 122, 124, 129. 

 Abdon, Salop, cornstone of, 180. 

 Abereiddy Bay, Pembrokeshire, slaty cleavage, 401. 

 Aber-eddw, Radnorshire, Upper Ludlow fossils, 611. 

 Abergavenny, Carboniferous Limestone of, 156. 



, Old Red Sandstone of, 171. 



, section near (PI. 31. f. 1.), 171, 716. 



, detritus near, 517. 



■ , fossil fishes of Old Red Sandstone, 597. 



Aberglasslyn, Caermarthenshire, Llandeilo flags (PI. 34. f. 8.), 

 720. 



Acidaspis, genus of crustaceans, 650 — 658. 



Acton, Stackhouse Mrs. sketch, fossil named after, 162, 639. 



Acton Scott, Caradoc fossils at, 635 et seq. 



Acton Burnell Hills, Salop, 94, 221. 



, Caradoc fossils of, 636. 



Acton Reynolds, Salop, trap dykes, 295, 297, 718. 

 Adderley, Cheshire, lias shale, 25. 

 Admaston Spa, Salop, 234, 252. 

 Adriatic sea, when frozen, 539. 



Africa, South, Oolitic and Silurian Rocks in, 583, 653. 

 Agassiz, M., researches on fossil fishes, 89. 



, fish of the Lias and Keuper, 30. 



, on fossil fish of the coal measures, 84, 474, 475. 



, Ichthyodorulites of carboniferous limestone, 119, 



161. 



, on fossil fishes of the Old Red Sandstone, 172, 589 



—596, 596—608. 



, of Upper Ludlow Rocks, 199, 605—607. 



. , on the action of ice, 538. 



, on general distribution of ichthyolites, 581. 



Agnostus, genus of Crustaceans ? 650, 664. 

 Agricultural characters of Old Red Sandstone, 193, 387. 



Agricultural characters of Silurian Rocks, 252. 

 Aikin, Mr. Arthur, on the Hawkstone Rocks, 39. 



, on the coal-fields of Shropshire, 99, 144. 



, on the trap rocks of the Caradoc and 



Wrekin, 226, 229, 233. 



, projected work on Shropshire, 4, 255, 283. 



, on the Snailbatch lead mine, 280. 



, on fossils in altered quartz rock, 285. 



, on the trap rock of Birch HiU, 501. 



Alberbury, Salop, Dolomitic Conglomerate and Lower New Red 



Sandstone, 48, 63, 95. 

 , sections near to (PI. 32. f. 7. PL 29. f. 9.) 



713, 718. 



Alberti, " Monographic des bunten Sandsteins," 32. 

 Alden, near Ludlow, remains of fossil quadrupeds, 553. 

 Alderley Edge, copper ore in New Red Sandstone, 39. 

 Alexander, Capt. (now Sir James), on the Cedar Mountains, 



South Africa, 653, 701. 

 Alfrick Pound, Worcestershire, Caradoc Sandstone, 414. 

 Allen, Mr. Baugh, (see Cilrhiw), 386. 

 Allies, Jabez, Mr., patches of coal in Worcestershire, 135. 



, on impressions in Old Red Sandstone, 179. 



, recent sea-shells and fossil bones in gravel, 



532, 533, 534, 554. 

 Allt-fawr, Brecon anticlinal (wood-cut), 338. 

 Alluvium, early, of Siluria, 549. 



, organic remains in, 552. 



, of the Avon valley (Worcester), 554. 



, organic remains in, 555. 



, modern, turbaries, &c, of lakes, 558. 



, of rivers, 561. 



Alps, salt mines in the, 32. 



■ , carbonaceous matter accumulated in recesses, 150. 



, " ecroulemens" of, 435. 



, Tyrolese, bowlders on flanks of (wood-cut), 544. 



Alsace and Lorraine, upper formations of New Red System in, 



compared with those of England, 44. 

 Alterations of sandstones by trap, 137, 186, 220, 226, 233, 263, 



363, 402, 495. 



of schistose rocks by trap, 259, 265, 275, 321, 328, 



332, 344. 



of limestone by trap, 320 et seq. 



of coal by trap, 498, 500. 



Alt-y-maen, Caradoc Sandstone and fossils, 306, 636 et seq. 

 Alt-yr-ankr, Montgomeryshire, Caradoc fossils at, 636. 

 Alveley, grindstones in Lower New Red Sandstone, 60. 



, section across (PL 30. f. 1.), 715. 



Alveston Down, Carboniferous Limestone, 461, 462. 

 Ambleston, Pembrokeshire, porphyry, 402. 

 America, South, volcanic action in, 70. 



5 a 2 



