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page
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| Flœtz rocks, in the North of Ireland, described |
152
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| Flinty slate, containing Ammonites at Portrush |
213
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| ──────── covered by Trap in Sky |
98
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| Fossil remains, of the Green sandstone of Ireland |
169
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| ────────── of the Chalk of Ireland |
169
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| Foy, mountain, near Carlingford, chiefly composed of Primitive Trap |
140
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|
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| Garsven, mountain in Sky, durable nature of |
24
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| ──── its base composed of Red sandstone |
37
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| ──── in Sky composed of large grained Greenstone |
65
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| Geology, may be of service to agriculture |
9
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| Gillan, in Sky, order of the beds at |
44
|
| Glamich mountain, in Sky, consists of Syenitic rock and Clinkstone |
14
|
| ────────── affects the magnetic needle |
95
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| Glen Tilt. A Geological Description of, by Dr. Mac Culloch |
259
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| ──── connection of its granite with that of the Grampian hills |
302
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| ──── General Geological Description of |
311
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| Granite, the prevailing constituent of the Mourne mountains |
122-134
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| ──── and Syenitic granite are geologically the same rock |
227
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| ──── circumstances attending its contact with the stratified rocks in Glen Tilt |
312
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| ──── found in the South Western part of Somersetshire |
348
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| ──── veins, passing through Schist and Limestone in Glen Tilt |
268
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| Graydon, The Rev. George, on the Dykes of Monte Somma in Italy |
238
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| Green sand, underlying the Chalk in the North of Ireland . 130
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| ──────── reposes immediately on Lias in the North of Ireland |
130
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| Greenstone, occurs in Sky |
59
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| ──────── its characters there |
63
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| ──────── occurs in the North of Ireland |
142
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| ──────── of the North of Ireland, described |
184-204
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| ──────── Vein of in Glen Tilt |
281
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| ──────── porphyry, occurs in Sky |
69
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