Page:Transactions of the Geological Society, 1st series, vol. 3.djvu/451

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Syenite in Sky supporting and mixed with limestone	40
──── in Sky, described	68
──── its tendency to decompose	70
──── in contact with marble limestone, in Sky	70
──── in Sky of later formation than the limestone	76
──── in the North of Ireland, described	144
──── distinguished from syenitic granite, by Dr. Mac Culloch	300
Syenitic granite, and granite, their Geological identity	297
Talc slate, mica slate passing into, in Sky	29
Talisker, in Sky, abounds in zeolites	82
Tellurium, Professor Esmark's Description of a new Ore of	413
Titanium, Oxide of, found in Scotland	309
Traill, Thomas Stewart, M.D. Observations on the Salt Mines of Cardona, made during a tour in Spain in the summer of 1814	404
Transition rocks, in the North of Ireland, described	146
Trap, forms the great Northern division of Sky	8
── decomposed, forms fertile soil	9
── veins in the secondary strata at Loch Slapin, in Sky, washed away	25
── vein in a cave, in Sky	26
── general account of, in Sky	54
── stratified detached masses of, in Sky	56
── varieties of, in Sky	57
── rarely columnar, in Sky	58
── veins in Sky, account of	75
── ── two sets of	76
── effect of the junction of the, on the shale in Sky	99
── Mr. Aikin's Observations on a bed of, at Birch Hill colliery	251
── primitive, in the North of Ireland, described	140
────── consists almost entirely of hornblende	140
── transition, in the North of Ireland, described	145
── Flœtz, bed of, lying in conformable position between the strata of sand in the coal formation of Ballycastle	159
────── formation in the North of Ireland, described	177