754 



INDEX. 



Lower New Red Sandstone, importance of when overlying coal, 

 66. 



. — — , calcareous in the central counties, 



54 et seq., 66. 



>, sections of (PI. 29. 30.), 714 et seq. 



Ludlow Rocks, Upper, 4, 197, 300, 311, 337, 348, 410, 430, 438, 

 454, 481. 



— , organic remains of referred to, 198, 300, 



311, 338, 340, 390, 410, 430, 439, 446, 454, 481. 



— — ; — ■, described, 605 et seq. 



, Middle. See Aymestry Limestone. 



, Lower, 204, 301, 311, 430, 439, 454, 482. 



■ — , organic remains of referred to, 206, 302, 



315, 340, 349, 430, 439. 



. — _ described, 616 et seq. 



, thickness of, 207, 410. 



, dislocations of, 237, 312. 



, outliers of, 231, 240. 



, sections of (PI. 31. et seq.), 716 et seq. 



— promontory, 212, 213, 238. 



Rocks, fossils of. See Organic Remains. 



district, dislocations of, 236. 



Hills, W. and S.W., examples of landslips, and walker's 



soap, 248. 

 Castle, well in, 250. 



— ; promontory, section across (PI. 31. f. 5.), 716. 



(local drift of), 512. 



— ■ , plain E. of, drifted matter in, 514. 



, N. of, deposits of travertine, 565. 



, elevation of the ridges of parallel to coal-fields, 571. 



, fishes found near, in the central parts of the Old Red 



System, 587. 

 Ludford, Upper Ludlow Rock, 197, 199. 



— , fossils of, 613. 



Lugg river, cliffs of Ludlow Rocks on banks, 203, 205, 239. 



, banks of, near Kinsham, Wenlock Limestone, 212. 



river, gorge of at Aymestry, gravel, &c, 549, 550. 



Luneville in France, keuper near, 29. 



Luston (near Leominster), gravel pits, 512. 



Lutley, thin coal seams at, 56. 



Lutwiche Brook, near Ludlow, 239, 240. 



Lwchwr river, Caermarthenshire, source of, 157, 721, 166, 167. 



Lydham, Montgomeryshire, 269. 



Lydney on the Severn, dislocations, 133, 190, 715 (PL 30. 

 f. 13.). 



Lyd's Hole, section of altered rocks and trap, 263, 264. 

 Lyell, Mr., classification of tertiary deposits, 3. 

 ■, on false stratification, 59. 



•, on the excavation of valleys in central France, 70, 



522. 



. , on volcanic rocks, 73. 



, on the trap rocks of Sicily, 75. 



. , analogy of modern causes, 149. 



; , submarine volcanic rocks, 230, 235. 



_— -, dykes in Monte Somma, 235. 



, on the Cantal, 375. 



•, on craters of elevation, 427. 



, on the present bottom of the Cattegat, 533. 



— , on the transport of bowlders by ice, 538, 539, 731. 



-, on climate, 544. 



, on the formation of the "loess " of the Rhine, 557. 



-, on shell marl, 565. 



'■ , fish of Old Red Sandstone named after, 587, 589, 



606. 



Lyme Regis, lias, 16. 



Lyne's Place, Gloucestershire, sections of New Red Sandstone, 

 51. 



Lyth Hill, promontory of Cambrian rocks and trap, 90, 92, 256, 

 264. 



, carboniferous patches, west flank of,. 93. 



, near Shrewsbury, veins of copper ore, 261. 



, bitumen in Cambrian Rocks of, 266, 727. 



, sections at (PI. 29. f. 3, 5), 713. 



Lythwood, Shrewsbury coal-field, 91. 

 Lyttelton, Lord, 78, 506. 



Macculloch, Dr., on the ancient rocks of Scotland, 4. 



- — , on the igneous origin of trap, 73. 



. , observations on the formation of coal, 149. 



■ , on granite joints and tors, 243, 540. 



i , on the hypersthene rock of the Isle of Skye, 



318, 540. 



Mackenzie, Sir G., travels in Iceland, 70. 

 Maclauchlan, Mr., geological map of the Forest of Dean, &c, 

 80, 445. 



, carboniferous limestone of South Welch coal- 

 basin, 165. 



Macleay, Mr. W. S., on the structure and affinities of trilobites, 

 666 et seq. 



-, on fossil annelids, 699. 



Madeley, Salop, Lower New Red Sandstone and coal, 61, 62, 99, 



100, 102. (See Little Madeley, Staffordshire, ante.) 

 Madox Hill, Wrekin, 232, 233. 

 Maen rocks, Radnorshire, 316. 



, Montgomeryshire, Silurian fossils, 636 et seq. 



Magnesian Limestone, equivalent of calcareous conglomerate, 

 46, 450. 



. , fossils in red marls of at Manchester, 50. 



Malachite in Caradoc Sandstone, 222, 227. 

 Malcolmson, Mr. J., on ichthyolites of Old Red Sandstone, 601, 

 602. 



Mallock Slate Mill, Pembrokeshire, Caradoc Sandstone, 395. 

 Malpas, Cheshire, New Red Sandstone of, 298. 

 Malvern (Great), (PI. 36. f. 7.), 417, 722. 



hills, western boundary of New Red Sandstone, 29. 



■ , trappean conglomerates of New Red System near, 



52, 65—67, 722 et seq. 



, trappean ridges of, 78, 186, 409, 417 et seq. 



, base of Old Red Sandstone near, 183. 



, Silurian Rocks on western slopes of, 414, 416. 



, sections to and across (PL 36. f. 5 — 8.), 722. 



— — -, elevation of has reversed the contiguous strata 



(PL 36. f. 7.), 425, 426, 722. 



, high level of the springs in, 496. 



, eastern limit of the local drift of Herefordshire, 



511. 



, western limit of the northern drift, 530. 



, straits of, 530, 537. 



, axes of elevation ofSilurian Rocks, both N. and S. 



and N.E. S.W., 569. 

 Mamble coal-pits and Old Red Sandstone, 134, 135. 

 Manchester, magnesian limestone equivalents, 64. 



, upper coal measures near, 86, 88, 89. 



Mandinam, Caermarthenshire, Lower Silurian fossils, 636 et seq. 

 Manganese, black oxide of, in New Red Sandstone, 38, 42, 494. 



, peroxide of in Wenlock Limestone, 214. 



Mantell, Dr., fish-spine obtained from, 598. 

 , , fossil insect in his museum, 104. 



