INDEX. 



755 



Map of Silurian Region, described, xxvii. 

 — - — of valley of Woolhope, 427. 



to illustrate coal accumulations, 151. 



Marble of Clee Hills (carboniferous), 120. 



, black, of Caermarthenshire (carboniferous), 156. 



of Eastbope (Upper Silurian), 210. 



of Nash, bard, crystalline and imbedded (Upper Silu- 

 rian), 321. 



■ of Ledbury (Upper Silurian), 413. 



Marchamly, Salop, Lower Lias and Red Marl, 23, 24, 38. 

 Marcle Hill, remarkable landslip of Ludlow Rock, 249, 439. 



described by Camden, 434. 



, formation of, 430. 



Marine shells of existing species in Northern Drift, 531 et seq. 

 Market Drayton Lias, and New Red Sandstone, 22, 298. 

 Marls of Magnesian Limestone with shells, at Manchester, 50. 



Red. -See Saliferous Marls, Keuper, &c. 



shell, modern formation of, 564. 



Marloes Bay, Pembrokeshire, coast section of Silurian Rocks 

 (wood-cut and PI. 35. f. 10.), 392 et seq., 721. 



, trap and altered rocks, 403, 405. 



• , succession of Silurian and Cambrian rocks, 404. 



, direction of Silurian rocks, 568. 



■ , Upper Silurian Rocks and fossils, 392. 



, Lower Silurian Rocks and fossils, 394, 636 et seq. 



, amorphous trap and Llandeilo Flags, 405. 



Marlstone (Lias) in Gloucestershire, organic remains of, 17, 449. 



, outliers of, 17, 449. 



in Shropshire, and organic remains of, 23. 



Marnes irisees, or "Keuper" of Alsace, equivalent of English 

 saliferous marls, 44, 65. 



Marrington Dingle, parallel ridges of volcanic grit, 269, 270. 



, eruptive trap in, 273. 



, course of the river Camlet through, 551. 



Marrington Green (near Shrewsbury), northern drift and sea- 

 shells, &c, 531, 532, 538. 



Marros Mountain, Pembrokeshire, millstone grit, 380. 



Marston, Mr., fossils and trap rocks, 261. 



Martin, Mr., references to Petrif., Derb., 107, 647. 



Martin, Mr., fossil fishes of Old Red Sandstone found by, 600. 



Martin's Haven, Pembrokeshire, conversion of sandstone into 

 granular quartz rock, 405. 



Martley, Worcestershire, New Red Sandstone and Silurian 

 Rocks (P1..36. f. 4.), 53, 722. 



, syenite near, 420, 421. 



Mary Knoll Dingle, Ludlow, Lower Ludlow Rock in, 205, 207. 



fossils in, 617 et seq. 



Mathews, Mr. W., Dudley, assistance in the Dudley district, 475, 

 499, 504. 



Mathon, Herefordshire, micaceous green flagstone, &c, near 

 to, 183. 



Lodge, Upper Silurian Rocks, 410. 



, inverted Silurian strata (PI. 36. f. 6.), 423, 722. 



Maudlin Bridge, Pembrokeshire, carboniferous limestone and 



Caradoc Sandstone, 380, 395. 

 Maund Hill, Radnorshire, Upper Ludlow fossils, 611. 

 May Hill, Gloucestershire, flank of, coal measures and Old Red 



Sandstone near, 154, 183. 



■ , course of Woolhope anticlinal, 438, 445. 



, Silurian Rocks of (PI. 36. f. 13.), 442, 443, 444, 



723. 



^ , organic remains of, 623, 629, 



638 et seq. 



Meadow Town, Salop, Llandeilo Hags and trap, 274. 



Meadow Town, Salop, fossils at, 638 et seq. 



Medlicott, Salop, copper veins in Cambrian Rocks, 261. 



Meifod, Montgomeryshire, Caradoc Sandstone, 301 to 306. 



Mellor, Mr., coal measure limestone at Ardwick, 86. 



Mendip Hills, dolomitic conglomerates of, 451. 



Menith Wood, Forest of Wyre, coal-pits, 135. 



Meole Brook, Shrewsbury, Lower New Red Sandstone, 63. 



Meres, or pools, frequent in the New Red Sandstone, 41. 



Merry Hill, Malverns, Caradoc Sandstone at, 415. 



Mersey, estuary of, 546, 558. 



Merthyr Tidvil, dislocations near, 156. 



Metallic veins, connexion of with trap rocks, 262, 283, 364. 



Meyen, Dr., elevation of South America, 545. 



Michaelwood Chace, Tortworth, Silurian and trap rocks, 456, 



459, 460, 461. 



, fossils at, 641. 



Mickleburgh, Mr., agricultural remarks by, 191. 



Myddleton Hall, Caermarthenshire, Old Red Sandstone and 



Upper Silurian Rocks, 182, 349. 



, fossils at, 618 et seq. 



Middleton, near Shelve, Salop, Llandeilo flags, 270. 



— , fossils at, 641 et seq. 



, Breidden Hills, Salop, felspar rock (PI. 32. f.6.), 292, 



717. 



Midland Isle, Pembrokshire, intrusive trap, 405. 



Midsummer Hill, Malverns, Caradoc Sandstone and syenite 



(wood-cut), 416, 418, 419. 

 Milbury Heath, Gloucestershire, Old Red Sandstone (PI. 36. 



f. 20.), 461, 724. 

 Milford Haven, Old Red Sandstone, 371, 372, 388, 520. 

 Milkmaid Rock on Severn, Gloucestershire (wood-cut, PI. 36. 



f. 16.), 446, 723. 

 Miller, Professor, bypersthene rocks of Old Radnor, 318. 



, minerals of North Pembroke, 402. 



, Mr., of Bristol, descriptions of Crinoidea, 161. 



• , of Cromarty, fossil fishes in Old Red Sandstone, 



602. 



Milling, Pembrokeshire (PL 35. f. 2.), 721. 

 Millstone grit of the Clee Hills (PI. 30. f. 1. et seq.), 113, 117, 

 715. 



■ of Oswestry (PI. 30. f. 14.), 143, 716. 



— contains no coal in Salopian and South Welch 



fields, 160. 



of Pen cerrig Calch (PI. 31. f. 1.), 162, 716. 



of Pembrokeshire (PI. 35. f. 4. etc.), 380, 721. 



of Gloucestershire (PI. 36. f. 21.), 452, 724. 



Mineral character of trap rock, 68. 



uniform over large spaces, 573. 



veins. (See Mines, Lead Ores, and Copper Ores). 



springs in the has and saliferous marls, 34. 



. in the coal measures, 155, 507. 



in the Silurian Rocks, 241, 252, 261, 327, 329, 



332, 334. 



■ in the Cambrian Rocks, 343. 



■ their connexion with trappean eruptions, 334, 



343, 507. 



Mines of lead ore (See Lead Ores), 214, 222, 227, 223, 275, 



277, 308, 345, 366. 

 of copper ore (See Copper Ores), 39, 49, 146, 188, 214, 



227, 260, 297, 402. 

 Minsterly, Salop, greenstone near, 276. 

 Mississippi, 149. 



Mitchel Dean (PI. 36. f. 13.), 444, 723. 

 Mynidd-bach, Brecon anticlinal, 337. 



