Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/470

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460
INDEX.
page
Basalt in the lead mine measures of Northumberland agrees in situation with the toadstone of Derbyshire 73
───── overlying masses of, occur in many parts of the lead mine measures 7478
Basaltic dykes. See Dykes
Basaltic veins in the granite and schist of Cruachan 123
Beadnel Bay, dyke at, described 102
Belfast Lough, nuts filled with calcareous spar found in 443
Bennet, The Hon. Henry Grey, on a whin dyke traversing limestone in the county of Northumberland 102
Bitumen, found in some varieties of the magnesian limestone near Sunderland 6
Bituminous Limestone, analysis of one, by Dr. Clarke 430
Blakheath, account of plastic clay beds near 288
Blende, note on the cleavage of 257
Bog iron ore, found in the Cheviot hills 95
Boring, estimate of the expence attending at Roxburg or Berwick 101
Breccia, occurrence of one of a modern date at Loch Ericht, having a siliceous cement 266
Brendon Hills, height of the 437
Bright, Richard M.D. on the strata in the neighbourhood of Bristol 193
Bristol, Dr. Bright and Mr. Cumberland, on the strata in the neighbourhood of 193
─────, sections of the strata near, given by Dr. Bright and Mr. Cumberland 197
─────, horizontal beds lying on the edges of the inclined strata in the neighbourhood of 202
Buckland, The Rev. W. Description of an insulated group of rocks of slate and greenstone, in Cumberland and Westmoreland, on the east side of Appleby, between Melmerby and Murton 105
──────────, Description of a series of specimens from the plastic clay near Reading, Berks: with observations on the formation to which those beds belong 277
──────────, Description of the paramoudra, a singular fossil body found in the chalk of the north of Ireland, with some general observations upon flints in chalk, tending to illustrate the history of their formation 413