750 



INDEX. 



Humboldt, Baron A. Von, on the chain of the Ural, 286. 



■ , on climate, 544. 



Hundred House, Worcestershire, coal measures near, 135. 



— , Silurian and trap rocks near 



(PI. 36. f. 1, 2.), 410, 412, 419, 722. 

 Huntley, Gloucestershire, New Red Sandstone, 51. 



Hill, Silurian Rocks of (PL 36. f. 13.), 443, 444, 723. 



H umber, elevation of the estuary of, 546. 



Hurst Hill, Dudley, Wenlock Limestone of (PL 37. f. 4.), 473, 



483, 487, 725. 

 Hutton, Dr., on the igneous origin of trap, 73. 

 Hutton, Mr. W., on the whin-sill or basalt of Northumberland, 



77. 



, plants of the Fossil Flora, 85, 104. 



— , on vegetable impressions in coal, 151. 



Hypersthene rocks in Radnorshire, 318. 



Hyssington, volcanicgrit and Lower Silurian Rocks, 272, 273, 

 286. 



Icebergs or Ice-floes, their transporting power, 538, 540, 731. 

 Iceland, volcanic eruptions of, 70. 

 Ichthyodorulites in Keuper sandstone, 596. 



Old Red Sandstone, 596, 597. 



Upper Ludlow Rocks, 607. 



Igneous origin of trap rocks, 68. 

 Ilfracombe, referred to, wood-cut, 360. 

 Illustrations in part L, list of, xxi et seq. 



in part II., list of, xxiv et seq. 



Imrie, Col., Campsie Hills, denudation of, 537. 

 Inferior Oolite, description of, 14 et seq., 449. 



, organic remains of, 15. 



Intensity of ancient dislocating forces, 574. 



referred to central heat, 



575. 



Interval, geological, filled up by this work, 3 et seq. 



Intrusive trap, see trap rocks. 



Inverted position of Cambrian Rocks, 309, 342. 



of Upper Silurian Rocks, 348, 366, 420, 424. 



■ of coal measures in Pembrokeshire, 379. 



• . of Caradoc Sandstone near Malvern, 423. 



1 of strata proves intensity of action, 574. 



Iodine a common ingredient in mineral waters, 34, 35. 

 Ippikins Rock, Wenlock Edge, Wenlock Limestone, 212, 554. 

 Ireland, north of, basaltic rocks and chalk, 76. 



< , peat and fossil elks of, 559, 560. 



, carboniferous limestone and fossils of, 581. 



Irish Channel, tides flowing in opposite directions, 538. 

 Iron Bridge on the Severn, 529. 



, Upper Silurian fossils near, 613 et seq. 



Ironstone of the coal measures in Coalbrook Dale, 102. 



— , — in the Clee Hills, 113, 121. 



— in the Forest of Wyre, 132. 



of coal measures in Staffordshire, 472. 



Irtbon River, Brecknockshire (PL 31. f. 6.), 717. 

 Ischadites, a new nondescript genus, 697. 

 Isle of Ascension, obsidian of, 70. 



Isle of Gateholm, Pembrokeshire, Old Red Sandstone (wood- 

 cut), 393, 394. 



Isle of Nyoe, Iceland, submarine volcanoes, 71. 



Isle of Skomer, Pembrokeshire (wood-cut), 389, 392. 



Ithon River, banks near Llandrindod, trap ridges of, 324, 329, 

 345. 



Ivy Scar, Old Radnor, trap altering limestone, &c. (wood-cut), 

 320. 



Jack's Sound, Pembrokeshire, intrusive trap, 405. 

 Jager, Dr., on fossils of the Keuper, 30. 

 Jameson, Professor, classification of trap rocks, 74. 



, collection of fossil fishes, 600. 



Jarrow Colliery, fossil plants in coal measures, 85. 

 Jewstone (black), a local name for basalt and trap, 126, 419. 



(white), local name for altered sandstone and limestone, 



137, 313. 



Joints in the carboniferous limestone, 146, 461. 



Upper Ludlow Rock, 201, 339, 411, 455, 491. 



■ Aymestry Limestone, 553. 



Lower Ludlow Rock, 205. 



Wenlock Limestone, 491. 



Llandeilo Flags, 307. 



Lickey quartz rock, 495. 



Silurian Rocks, 244. 



altered sandstone, 285. 



volcanic grits, 273. 



, landslips caused by, 248, 435. 



Jones, Mr. (of Dolecothi), Roman remains, 367, 368. 



(of Ludlow), Ludlow fossils, 251. 



Johnston, Pembrokeshire, coal measures, 379, 395. 

 , Caradoc Sandstone and trap (PL 35. 



f. L), 403, 721. 

 Jukes, Mr., section of Dudley coal-field, 503. 

 Junction, unconformable, of New and Old Red Sandstone, 51, 



154, 445. 



Old Red Sandstone and Ludlow 



Rock, 444. 



' New Red and Carboniferous Sy- 

 stem, 96. 



Silurian and Cambrian Rocks, 303. 



Jura, blocks transported to, 542. 



Karsten, M., his " Archiv. ; Inseln Skye," 74. 

 Keilhau, Professor, on Norwegian rocks, 7. 

 on trilobites, 646. 



Keir, Mr., sketch of the coal strata of Staffordshire, 463, 466, 

 470, 498. 



Kelpie's feetmarks in Old Red Sandstone of Scotland, 182. 

 Kempsey (on the left bank of the Severn), shells found in gravel, 

 532, 533. 



Kendal End, Lower Lickey, quartz rock, limestone and trap, 

 493, 495. 



Kenley, Salop, grit and conglomerate of Caradoc formation, 221. 



Kenyon, Hon. T., ore of copper in Salop, 39. 



Kerry Hill, Montgomeryshire, Old Red Sandstone and Silurian 



Rocks, 191, 300. 



, source of the Teme, 513. 



Ketley, Salop, coal-field of (PL 29. f. 16.), 714. 



Keuper, equivalents and general section of, xxvii. 29 et seq., 



(PL 29. f. 1.) 713, 727. 



, section of, near Stuttgard, 30. 



, organic remains of, in Worcestershire, 64, 727. 



. , in Warwickshire, 727. 



> of Germany, description of, 29 note. 



, fossil plants of, 44, 727. 



Kettle Hill, Dudley (PL 37. f. 2.), 725. 



Key's End Hill, Malverns (wood-cut), 416, 417, 418. 



Kidd, Dr., on the mineralogy of North Pembrokeshire, 370, 402. 



Kidderminster, New Red Sandstone (section, PL 30. f. 3.), 41, 



42, 54, 715. 



Kidwelly, carboniferous limestone north of, 157. 

 Kinaston, Herefordshire, landslip at, 434. 



