GENERAL INDEX. 949 Todbere, corallian rocks of, 279. Topley, W. Esq., and G. A. Lebour, Esq., on the intrusive character of the Whin Sill of Northumberland, 406. Torsukatak, fjord of, 142, 147; rate of motion of the glacier of, 150. Tortoise, from the caves of Gibraltar, 188. Tortoises, Prof. A. Leith Adams on gigantic land, and on a small fresh- water species from the ossiferous caverns of Malta, 177. Transvaal, Mr. E. J. Dunn on the gold-fields and cobalt-mines in the, 879 ; section of cobalt-mine in, 879. Trap dykes of the Lizard district, 910, 913. Trap vein, intersecting gabbro, 907. Traquair, Dr. R. H., on the Agassizian genera Amblypterus, Palceoniscus, Gyrolepis, and Pygopterus, 548. Trigonia-beds of Weymouth, 266. Trochocyathus angulatus, 503. Trochus aytonensis, 395. cancellatus, 498. Trowse, section across the Yare vallev at, 83. Tuck's- Wood Farm, section at, 86. Tunstall, Permians of, 18. Turbo Pictetianus, 497. Turrilites Wiestii, 492. ? Emericianus, 493. nobilis, 493. Tyrone coalfield, 624. , section through the, 618. Urnanak, 143, 144. Island, 158. Unconformity between the lower and middle glacial deposits in East Anglia, 78. Unfossiliferous sands of the Red Crag, 74. Unicardium plenum, 396. Upernivik Island, 143, 144. Upper boulder-clay and middle sand, line of demarcation between, 735. Carboniferous strata of Shrop- shire and Denbighshire, Mr. D. C. Davies on the relation of the, to beds usually described as Permian, 10. Up ware, corallian limestones of, 313. , presumed section near, 315. Ural, Permians of the, 15. Vellan Head, serpentine of, 890. Vertebral column, divisions of the, in Plesiosaurs, 545. Vertebrata, fossil, Seiior S. Calderon Q.J.G. S. No. 132. on the, hitherto discovered in Spain, 124. Volcanic agglomerates and ashes, 458. cones, Mr. R. Mallet on a hitherto unnoticed circumstance affecting the piling-up of, 740. Waldringfield Church, section in a co- prolite pit l^mile north-west of, 75. Wales, North, Prof. T. M'Kenny Hughes on the Silurian Grits of Corwen, 207. , , Mr. J. A. Phillips on the chemical and mineralogical changes which have taken place in certain eruptive rocks of, 423. -, South, coal-basin of, 632. Walsall, Permians of, 22. Walsingham valley, section across the, 89. Ward's Hill, sketch section through, 413. Warwickshire, Permians of, 22. coal-field, 631. Wave, wind-, breaking on a shelving beach, 35. Waveney valley, section across the, near the sea, 97 ; section across the, near Harleston, 98; hypothetical section, showing general structure of, 100. Wellington, map of the neighbourhood of, 654. Wensum, sections across the valley of the, 87. and Yare, section across the val- leys of the, 85. Westbrook, coral rag of, 288. Westbury, diagram section from, to Wheatley, 312. ironstone, 284. Westphalia, Carboniferous of, 638. Wexford, Mr. G. H. Kinahan on Ca- hore shingle beach, 29. Weymouth district, corallian rocks of the, 262. Wheatley, corallian of, 311. , diagram section from Westbury to, 312. Whin Sill, Messrs. Topley and Lebour on the intrusive character of the, of Northumberland, 406. , section across both branches of the, near Great Barrington, 413. Whitaker, W. Esq,, on the Red Crag, 122. White Hill, 770. Whittle Hills, 757. Whitwick, 779. Wilson, E., Esq., on a new exposure of Rhsetics near Nottingham, Proc. i. 3d
