744 



INDEX. 



Daniel's Wood, Tortworth, band of trap, 459. 

 Danube, when frozen, 539. 



Daren rocks, near Crickhowell, " ecroulement" of Old Red 

 Sandstone, 163, 172, 179. 



s 1 ■ • ' , fossil fish found at, 588. 



Darlaston, Staffordshire, carboniferous sandstone of, 471. 

 Darley Brook, Bridgenorth, Ludlow rock fossils, 609. 

 Da Costa, M., on trilobites, 646. 

 Darran, Usk, Ludlow Rock, 439. 



Dartmouth, Earl of, colliery worked through Lower New Red 

 Sandstone, 58, 466, 468, 502, 508, 725, 728. 



Darwin, Mr. C, marine shells in detritus, 532, 533. 



, his journal during the voyage of the Beagle, 



542, 543. 



, on icebergs, and the former temperature of 



Europe, 544. 



, Silurian fossils from the Falkland Islands, 8, 



583. 



Daubeny, Dr., on iodine in rock salt, 33, 34. 



, on volcanos, 69, 71, 266. 



, analysis of mineral waters, 335. 



Davis, Mr. E., of Presteign, fossils of Upper Silurian Rocks, 

 202, 313, 615. 



Davies, Rev. W., statistics of Llanymynech, 732. 



Davy, Sir Humphry, Usk River, 441. 



Daw End, Staffordshire, Wenlock limestone of, 488, 489. 



Dawes Castle, Ledbury, Ludlow Rocks at, 411. 



Dawley, Salop, petroleum in carboniferous strata, 103. 



Dawson, Mr. R., coal shafts through the Lower New Red Sand- 

 stone, 58, 467, 475, 502. 



Dean's Corner, Broseley, Salop, Ludlow Rocks, 241, 619. 



Dean Forest Coal-field referred to, 80. 



De Blainville, references to his Manuel d'Actinologie, 675 et seq. 



Dechen, M. Von, on trap rocks, 74. 



Dee, estuary of, 558. promontory of, 734. 



Deerfold Chase, Lower Ludlow Rock, 205. 



Defford (in Worcestershire), ancient river deposits traced to, 



shells found in, 555. 

 De France, M., on Conularia, 627. 



, references to his account of Vinculaiia, 677 et seq. 



Dekay, M., on transition fossils, 8, 646. 



De la Beche, Mr., Ordnance Map, coloured geologically, xxxi. 



. , on the oolitic series, 13. 



, Geological Manual, 16. 



■ , on trap, 77. 



, on joints, 244. 



, on hypersthene rock in Devonshire, 323. 



-, memoir on Pembrokeshire, 370 — 373, 402, 



403, 453. 



, Researches in Theoretical Geology, 427. 



, on bones in caverns, 554. 



Delbury, or Diddlebury, Salop, fossils of Ludlow Rocks, 609 

 et seq. 



Delves Green, Staffordshire, Wenlock Shale, 488. 



■ , fossils at, 629 et seq. 



Demetae, part of their territory described, xxxii, 700. 

 Denbighshire, coal-fields and carboniferous limestone of (re- 

 ferred to), 145, 148, 156, 571. 



. coal-field, fossil fishes in (see Bowman, Mr.), 475. 



, drifted matter from, 528. 



Denmark, former condition of, 543. 

 Denudation of the Valley of the Usk, 164, 517. 



— at Presteign, 313. 



of Woolhope Valley, 436, 516. 



Denudation of Central Herefordshire, 516. 



— of the Ludlow promontory, 549. 



Desmarests, M., Carte " Topographique et Mineralogique du 



Puy de Dome," 70. 

 Detritus, superficial. See superficial detritus, 

 Deuxhill coal, Salop, 131. 

 Devanner Hills, Radnorshire, 317. 

 Devil's Elbow, trap dyke near Dudley, 499. 

 Devonshire, New Red conglomerates of, 67. 

 '■ , trap rocks of, 77. 



, plants found in the culm-bearing strata of, 85, 374. 



, culm-bearing rocks of, 161, 374. 



, raised beaches on the coast of, 546. 



Dickendale, Wenlock Limestone, 212. 

 Dictyoj)hyllum, fossil plant in New Red Sandstone, 43. 

 Die earth, provincial term for Silurian shale, 212. 

 Dillwyn, Mr., fossils of carboniferous limestone, 161. 

 Diluvium. See Drift. 



Diplopterus, ichthyolite in Old Red Sandstone, 589, 601. 

 Dipterus, ichthyolite in Old Red Sandstone, 589, 599. 

 Dinchope, Aymestry limestone, 202. 



Direction of the Silurian and Cambrian Rocks in Shropshire 



(see Strike), 267. 



, conflicting, of the strata in Pembrokeshire, 406. 



of the Silurian Rocks near Malvern, 425. 



, of lines of elevation near Dudley, 503. 



of lines of elevation in Siluria, 568. 



central England, 569. 



Dislocations. See Faults. 



, ancient, intensity of, 574. 



, reconciled with modern changes, 576. 



Ditton, Salop, lime works of cornstone, 180. 

 Divergent strike in rocks of the same age, 568. 

 Dod, Mr., of Cloverly Hall, Salop, outlier of has, 24. 

 Dog Hill, Ledbury, Ludlow Rock at, 411. 



m — ■ , fossils of, 610. 



Dolecothi, Caermarthenshire, Roman mines near, 367, 720. 

 Dolfan, Radnorshire, Cambrian Rock, 342, 515 (PI. 33. f. 7.), 



719. 



Dolomieu, M., on Auvergne, 69, 404. 



Dolomitic conglomerate, equivalent of calcareous conglomerate 



of central counties, 46 et seq., 450. 

 Donnington coal works (Salop), 100. 



Dormington, Herefordshire, Upper Ludlow Rock, 428, 431, 432 . 

 Dorsetshire, tertiary deposits of, referred to, 521. 

 Doverdale sandstone, the equivalent of that of Warwick, 65. 

 Downing, Mr. Francis, Dudley coal-field, xxix. 



, sections, &c, 470, 475, 485, 490. 



■ , Mrs., her collection of organic remains, 492, 702. 



Downton Castle, Ludlow, building stone and tilestone of, 181, 

 197, 341. 



Downton on the Rock, Aymestry limestone of and fossils at, 



201, 207, 615. 



, dislocations in gorge of, 237. 



Downton Hall, near Ludlow, flagstone and cornstone, 265. 

 Drayton describes the " Bone Well" in his " Polyolbion," 250. 



, « Wonder " - 434. 



Drift, local (or ancient), of the Silurian region, 510. 

 , of Herefordshire, from N.W. to S.E., 



513. 



— — , not confined to val- 



lies, 513, 519. 



— of South Welch coal-field, carried from 



S. to N., 517. 



