Page:Transactions of the Geological Society, 1st series, vol. 3.djvu/449

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Red sandstone, alternates with schist, at Loch Eishort in Sky 35
──────── interstratified with beds of schist, in Sky 36
──────── in Sky lie between limestone and quartz rock 37
──────── its characters 37
──────── in the North of Ireland, described 149
──────── alternating with greywacke, at Scabro hill 149
──────── thickness of the formation of, at Strangford Lough 150
──────── of Minehead, described 357
──────── marly, near Wotton Courtney, described 359
──────── argillaceous, in Somersetshire, described 363
Sahlite, found in Glen Tilt 289
Salt mines, of Cardona in Spain, Dn. TRAILIJS Observations on the 404
Sandstone, upper bed of, in Sky 46
──── remarkable disposition of the strata of, in Sky 47
──── Flœtz formations in the North of Ireland, described 160
──── Green, in the North of Ireland, described 167
────── of Ireland, fossils of 169
────── Red. See Red sandstone.
Scavig, Loch, Description of 83
Schiefer spar, sometimes found in the calcareous beds in Glen Tilt 288
Schist, of Glen Tilt, described 308
── singular variety of, found in Ben Gloe 309
Section, remarkable one shewn in the valley of the Tilt 277
Serpentine, noble, commonly mixed with the marbles of Scotland 283
Seymour, Lord Webb. Description of a Clinometer 385
Shale, its thickness in the Lincolnshire Wolds 395
Shell marle, bed of, in Glen Tilt 316
skey, Joseph, M.D. Physician to the Forces. Remarks upon the Structure of Barbadoes, as connected with specimens of its rocks 236
Sky, Dr. Mac Culloch's Sketch of the Mineralogy of 1
── general geographical description of 4
── great Northern division consists of trap 8