Geology: Chemical, Physical, and Stratigraphical, Band 2Clarendon Press, 1888 |
Häufige Begriffe und Wortgruppen
abundant America Ammonites Amongst Basin beds Belemnites bones Brachiopods Bracklesham calcareous Cambrian Carboniferous Cardium caves Cerithium Chalk character characteristic coal coal-fields Coal-measures coast common conglomerates consists contain Corals Cornbrash Cretaceous crust Crustacea deposits Devonian district division England Eocene Europe fauna feet thick fishes flint flora Foraminifera formation forms fossiliferous fossils France fresh-water Gault genera genus Geol geological geologists Glacial glaciers gravel Greensand hills Hyæna Inferior Oolite Inoceramus Journ Jurassic Kimmeridge land Lias limestones Linn London Clay Lower Mammalia marine marls mass Mesozoic Miocene Mollusca Neocomian North occur Oligocene Oolite organic remains Ostrea overlying Palæozoic Paleozoic Pecten peculiar period Permian plants Pliocene Professor Quart range Red Sandstone Reptiles Rhynchonella rocks sands sandstones seams Section shales shells silica Silurian South species specimens Sponges strata surface teeth Terebratula Tertiary Triassic Trigonia Upper valley Wealden Wenlock White zone
Beliebte Passagen
Seite 188 - ... swan, and occasionally darting it down at the fish which happened to float within its reach? It may, perhaps, have lurked in shoal water along the coast, concealed among the sea-weed, and raising its nostrils to a level with the surface from a considerable depth, may have found a secure retreat from the assaults of dangerous enemies ; while the length and flexibility of its neck may have compensated for the want of strength in its jaws, and its incapacity for swift motion through the water, by...
Seite 187 - ... that it swam upon or near the surface ; arching back its long neck like the swan, and occasionally darting it down at the fish which happened to float within its reach.
Seite 355 - Crocodiles, gavials, and alligators now require, in order to put forth in full vigour the powers of their cold-blooded constitution, the stimulus of a large amount of solar heat, with ample verge of watery space, for the evolutions which they practise in the capture and disposal of their prey. Marshes with lakes, extensive estuaries, large rivers, such as the Gambia and Niger that traverse the pestilential tracts of Africa, or those that inundate the country through which they run, either periodically,...
Seite 485 - Indiana, and Missouri. One magnificent specimen was found in a marsh near Newburg, New York, with its legs bent under the body and the head thrown up, evidently in the very position in which it mired. The teeth were still filled with the half-chewed remnants of its food, which consisted of twigs of spruce, fir, and other trees ; and within the ribs, in the place where the stomach had been, a large quantity of similar material was found.
Seite 536 - The solid crust would yield so freely to the deforming influence of sun and moon that it would simply carry the waters of the ocean up and down with it, and there would be no sensible rise and fall of water relatively to the land.
Seite 188 - ... nostrils to a level with the surface from a considerable depth, may have found a secure retreat from the assaults of dangerous enemies ; while the length and flexibility of its neck may have compensated for the want of strength in its jaws, and its incapacity for swift motion through the water, by the suddenness and agility of the attack which they enabled it to make on every animal fitted for its prey, which came within its reach.'— pp.
Seite 529 - Their observations fully confirm those of Professor Holland, and show that the motion of the inland ice may be compared to an inundation. It was found that there is a general movement of the whole mass of the ice from the central regions towards the sea, and that it concentrates its force upon comparatively few points in the most extraordinary degree. These points are represented by the so-called ice-fjords, through which the annual surplus of ice is carried off and discharged in the shape of icebergs.
Seite 208 - standing at ease ' not less than ten feet in height, and of a bulk in proportion, this creature was unmatched in magnitude and physical strength by any of the largest inhabitants of the Mesozoic land or sea. Did it live in the sea, in fresh waters, or on the land ? This question cannot be answered, as in the case of Ichthyosaurus, by appeal to the accompanying organic remains ; for some of the bones lie in marine deposits, others in situations marked by estuarine conditions, and, out of the Oxfordshire...
Seite 456 - ... points to slight temporary effects, except in one case, which is of more importance, and on which the greatest stress is laid, namely, that of Diirnten in Switzerland. There beds of lignite with mammalian remains are intercalated between two glacial deposits. Admitting the fact that the lignite rests on beds of undoubted glacial (groundmoraine) origin, and that the trees grew on the spot where their stumps and remains are found, it by no means follows, as contended, that because these trees are...
Seite 316 - The shape and character of the identifiable fragments do, indeed, prove that much of this must have been derived from the decayed and worn-down calcareous organisms ; and very often we may reasonably infer that the greater part, if not the whole, was so derived; but 'at the same time, it is impossible to prove, from the structure of the rock, whether some, or how much, was derived from limestones of earlier date, or was deposited chemically, as some certainly must have been."1 In their memoir on...