The Quarterly journal of the Geological Society of London . radiating processes and the com-posite nature of the groups. From Goodwick. (Slide 7.) p. 162. 5. Ditto. From Goodwick. (Slide 21.) x68. See p. 162. 6. Glassy ( tachylytic) variety of andesitic dolerite, showing groups of parallel crystallites of augite, globulites, felspar-crystals, etc. in thedevitrified groundmass. From Gam Fawr, Strumble Head.(Slide 90.) X68. See p. 184. 7. Ditto, showing skeleton felspar-crystals, and others with a granular core; also feathery aggregates of felspathic fibres, groups ofparallel crystallite
The Quarterly journal of the Geological Society of London . radiating processes and the com-posite nature of the groups. From Goodwick. (Slide 7.) p. 162. 5. Ditto. From Goodwick. (Slide 21.) x68. See p. 162. 6. Glassy ( tachylytic) variety of andesitic dolerite, showing groups of parallel crystallites of augite, globulites, felspar-crystals, etc. in thedevitrified groundmass. From Gam Fawr, Strumble Head.(Slide 90.) X68. See p. 184. 7. Ditto, showing skeleton felspar-crystals, and others with a granular core; also feathery aggregates of felspathic fibres, groups ofparallel crystallites of augite, crystallites of magnetite, etc. inthe devitrified groundmass. From Garn Fawr, Strumble Head.(Slide 101.) x68. See p. 184 and Analysis E. Discussion. Dr. Hicks congratulated the Author on having worked out with:such success the geology of a very difficult tract of country. Hewas particularly pleased to hear that the Llanvirn fauna had beendiscovered at Fishguard, as it marked a very definite horizon, and Quart. Journ. Geol. Soc. Vol. LI. PL R G E S C H A N N BGEOLOGICAL SKET OF THE FISHGITARMEWPOIM By F. R. Cowper R^PoM MA., — 1 Mid. Llandcilo. 3 Intrusive diabase,etc. Faults. Quart. Journ. Geol. Soc. Vol. LI. PI. V.
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