The Quarterly Journal of the Geological Society of London, Band 7The Society, 1851 Vols. 1-108 include Proceedings of the society (separately paged, beginning with v. 30) |
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Häufige Begriffe und Wortgruppen
accumulations Alps Ammonites angular anthracite appears Ardtun basalt beds Belemnites boulders calcareous carboniferous chalk character clay cliff coast colour conglomerate considerable containing crystalline debris denudation deposits described detritus district drift Dumfriesshire east elevation eocene erratic feet ferruginous flints formation fossils fragments genus Geol Geological Society geologists gneiss granite Graptolites gravel Greensand greenstone greywacke hills inch island Journ Jura Lake Lake Huron land Lias limestone Llandeilo Lower Greensand Lower Silurian M'Coy marine marl mass miles mountains Murchison Neocomian numerous Nummulites observed occur Oolite pebbles period phænomena plants plutonic porphyry portion present Prof quarries quartz Red Sandstone remains remarkable river sand schists seen shale shells shore side Silurian Silurian rocks similar slopes species specimens stone strata surface Swabia syenite Terebratula tertiary thickness tion tract trap upper valley Wealden whilst
Beliebte Passagen
Seite 248 - The pairs of the same side succeed each other at intervals, varying from one inch and a half to two inches and a half, the common distance being about two inches. The interval between the right and left pairs, measured from the inner border of the small prints, is three inches and a half, and from the outer border of the exterior or large prints, is seven inches.
Seite xxxiii - ... of two and a half to one succeeded it : it is the brain of the reptile ; then came the brain averaging as three to one : it is that of the bird ; next in succession came the brain that averages as four to one : it is that of the mammal ; and last of all there appeared a brain that averages as twenty-three to one : reasoning, calculating man had come upon the scene.
Seite xxxii - NATURE, we learn from the past history of our globe that she has advanced with slow and stately steps, guided by the archetypal light amidst the wreck...
Seite lxiii - Introduction, p. 14. compare the capricious chance which has hitherto put us in the exclusive possession of these seven jaws, with the equally strange accident recorded by Dr Mantell, in his career of discovery in the Wealden. He computed that in the course of twenty years he had found teeth and bones of the Iguanodon which must have belonged to no less than 71 distinct individuals, varying in age and magnitude from the reptile just burst from the egg, to one of which the femur measured 24 inches...
Seite xxxi - This historical development," continues the same author, " of the forms and functions of organic life during successive epochs, seems to mark a gradual evolution of creative power, manifested by a gradual ascent towards a higher type of being." " But the elevation of the fauna of successive periods was not made by transmutation, but by creative additions; and it is by watching these additions that we get some insight into Nature's true historical progress, and learn that there was.
Seite lxvi - ... known species of fossils are founded on single specimens, while a still greater number are founded on a few individuals discovered in one spot. This holds true not only in regard to animals and plants inhabiting the land, the lake, and the river, but even to a surprising number of the marine mollusca, articulata, and radiata. Our knowledge, therefore, of the living creation of. any given period of the past may be said to depend in a great degree on what we commonly call chance, and the casual...
Seite 237 - On examining the edges of each slab, we observe numerous layers, formed by successive tides, usually very thin, sometimes only one-tenth of an inch thick, — of unequal thickness, however, because, according to Dr.
Seite lxix - But so far as our interpretation of physical movements has yet gone, we have every reason to infer that the human race is extremely modern...
Seite 387 - No analogy of tidal or fluviatile action can explain either the condition or position of the debris and unrolled flints and bones. On the contrary, by referring their distribution to those great oscillations and ruptures by which the earth's surface has been so powerfully affected in former times, we may well imagine how the large area under consideration was suddenly broken up and submerged.
Seite 266 - Journ. vi. 1850, pp. 439-440. [The GSJ says, " This paper was withdrawn by the author with the permission of the Council."] Analogy of the Structure of some Volcanic Rocks with that of Glaciers. Edinb. Roy. Soc. Proc. ii. 1851, pp. 17-18. On the power of Icebergs to make rectilinear, uniformly-directed Grooves across a Submarine Undulatory Surface. Phil. Mag. x. 1855, pp. 96-98. Vitality of Seeds. Gardeners...