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acid appears Atrypa Aymestry Bala band beds boulders brownstone Calp carbonate Carboniferous Limestone Chiton clay cliffs coal coal-measures coast colour conglomerate county of Dublin crinoid deposited Dingle district drift Dudley Dunquin east escar feet felspar Ferriter's formation fossiliferous fossils Galway GEOL Geological Society geologists Glengarriff granite gray Graywacke greenstone Griffith grit Hill inches Ireland Irish iron Island Journal Jukes Kinahan lime Llandilo locality Lough Lower Limestone Ludlow magnesia mass mica mica slate miles mineral mountain observed occur Old Red Sandstone Orthis PaL Fos paper Phil phosphate Plate Port Posidonia Presented Professor Haughton quarry quartz remarkable Richard Griffith Royal Royal Dublin Society Salt schist Science shales shell shore side SiL Sys silica Silurian Silurian rocks species specimens Stephen's-green strata Strophomena surface thick Tirnaskea townland Trinity College Tyrone unconformably Upper Silurian Wenlock zone
Seite 21 - It measures about 26 miles from north to south and the same distance, from east to west.
Seite 160 - This progression, by minute steps, in various directions, but always checked and balanced by the necessary conditions, subject to which alone existence can be preserved, may, it is believed, be followed out so as to agree with all the phenomena presented by organized beings, their extinction and succession in past ages, and all the extraordinary modifications of form, instinct, and habits which they exhibit.
Seite 159 - We believe we have now shown that there is a tendency in nature to the continued progression of certain classes of varieties further and further from the original type — a progression to which there appears no reason to assign any definite limits...
Seite 219 - ... limestone, casts of fossil shells abound. Inland of these, the ordinary pale carboniferous sandstone and cherty limestone reappeared. The fossils are all small, and of only a few varieties, some being ammonites, but the greater part bivalves.
Seite 159 - On the Variation of Organic Beings in a state of Nature ; on the Natural Means of Selection ; on the Comparison of Domestic Races and true Species.
Seite 218 - ... ice. 2nd. The specimens were apparently of the same texture and composition as the native rock, whenever the latter was visible from under the snow. 3rd. I do not believe in the lapse of a long interval of time between the silurian and carboniferous deposits, — in fact, in a Devonian period. 4th. The same blending of corals has been found in Ireland, the Bas Boulonnais, and in Devonshire, where silurian and carboniferous forms are of common occurrence in the same localities.
Seite 142 - Presented by the Society. Proceedings and Papers of the Kilkenny and South-East of Ireland Archaeological Society, Nos.
Seite 68 - The Red and Fluvio-marine Crags, tested by their mammalian fauna, must be considered as beds of the same geological age. Throughout this paper, for the sake of clearness, the subgeneric names have been used in designating the species. The author, finding that the name Elasmodon, applied to the third group of Elephants, in the
Seite 256 - ... the red; and this was counted the best, producing most silver; whereas the other, or glistering sort, was very barren, and went most away into litteridge or dross. "The oar yielded one with another three-pound weight of silver out of each tun; and, besides the lead and silver, the mine produced also some quicksilver, but not any alum, vitriol, or antimony, that he could hear of.