The Quarterly Journal of the Geological Society of London, Volumen 18The Society, 1862 Vols. 1-108 include Proceedings of the society (separately paged, beginning with v. 30) |
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Términos y frases comunes
Alum Bay angle appears Archegosaurus Bagshot basin belong bones Bovey Bracklesham Beds calcareous Carboniferous rocks cave Chalk character Cliff coal Coal-field Coal-measures conglomerate Cyclopteris Dawson Dendrerpeton denudation deposits depth described Devonian district east Eocene evidence feet formation fossils fragments genus Geol Geological Society Geological Survey geologists glacial glaciers Glen gneiss granite grey hills Hylonomus inches Journ lake length Lepidodendron limestone Loch London Clay lower margin memoir miles mineral Miocene molars noticed numerous Nummulina observed occur Old Red Sandstone pebble-bed pebbles period Permian pinnules Plagiaulax plants plate portion posterior premolar present Prestwich probably Prof Quart Reading Beds remains resembles ridge River rounded sand sandy clay Scotland sedimentary seen shales shells side Sigillaria Silurian species specimens Sphenopteris stem strata surface teeth Tertiary thickness thin upper valley
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Página 147 - Gift of the State of New York. 13034, 0. 5. Sixth annual report of the Regents of the University of the State of New York on the condition of the State Cabinet of Natural History, &o.
Página xlvi - Palaeozoic epoch as at present, and those seemingly sudden appearances of new genera and species, which we ascribe to new creation, may be simple results of migration. It may be so; it may be otherwise. In the present condition of our knowledge and of our methods, one verdict — " not proven, and not proveable "• — must be recorded against all the grand hypotheses of the palaeontologist respecting the general succession of life on the globe.
Página lii - It negatives those doctrines ; for it either shows us no evidence of any such modification, or demonstrates it to have been very slight ; and as to the nature of that modification, it yields no evidence whatsoever that the earlier members of any long-continued group were more generalised in structure than the later ones.
Página xlvi - There seems, then, no escape from the admission that neither physical geology nor palaeontology possesses any method by which the absolute synchronism of two strata can be demonstrated. All that geology can prove is local order of succession. It is mathematically certain that, in any given vertical linear section of an undisturbed series of sedimentary deposits, the bed which lies lowest is the oldest. In...
Página 222 - The relative position in the silt, from which the canoes were exhumed, could help us little in any attempt to ascertain their relative ages, unless they had been found vertically above each other. The varying depths of an estuary, its banks of silt and sand, the set of its currents, and the influence of its tides in scouring out alluvium from some parts of its bottom and redepositing it in others, are circumstances which require to be taken into account in all such calculations. Mere coincidence...
Página 288 - THE GENEALOGY OF CREATION, newly Translated from the Unpointed Hebrew Text of the Book of Genesis, showing the General Scientific Accuracy of the Cosmogony of Moses and the Philosophy of Creation. 8vo. cloth, 14s.
Página 403 - Experimental Researches on the Granites of Ireland. Part III. On the Granites of Donegal.
Página xlvii - ... find no guidance, will be securely threaded by the clue furnished by the naturalist. All who are competent to express an opinion on the subject are, at present, agreed that the manifold varieties of animal and vegetable form have not either come into existence by chance, nor result from capricious exertions of creative power ; but that they have taken place in a definite order, the statement of which order is what men of science term a natural law.
Página li - What then does an impartial survey of the positively ascertained truths of palaeontology testify in relation to the common doctrines of progressive modification, which suppose that modification to have taken place by a necessary progress from more to less embryonic forms, or from more to less generalized types, within the limits of the period represented by the fossiliferous...
Página xxxviii - Society at the time of his death. He was also one of the founders of the Botanic Garden at Belfast.