The Ancient Life-history of the Earth: A Comprehensive Outline of the Principles and Leading Facts of Palæontological ScienceD. Appleton & Company, 1878 - 407 páginas |
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Página 3
... body and shape without containing , in some form or another , the belief in the existence of periodical convulsions , and of alternating cycles of destruc- tion and repair . That geology , in its early infancy , should have become im ...
... body and shape without containing , in some form or another , the belief in the existence of periodical convulsions , and of alternating cycles of destruc- tion and repair . That geology , in its early infancy , should have become im ...
Página 8
... body , which has at one time been very much hotter than it is at present . There has been a time , therefore , in which the igneous forces of the earth , to which we owe the phenomena of earthquakes and volcanoes , must have been far ...
... body , which has at one time been very much hotter than it is at present . There has been a time , therefore , in which the igneous forces of the earth , to which we owe the phenomena of earthquakes and volcanoes , must have been far ...
Página 11
... body , or the traces of the existence of any body , whether animal or vegetable , which has been buried in the earth by natural causes ( Lyell ) . We shall find , in fact , that many of the objects which we have to study as " fossils ...
... body , or the traces of the existence of any body , whether animal or vegetable , which has been buried in the earth by natural causes ( Lyell ) . We shall find , in fact , that many of the objects which we have to study as " fossils ...
Página 12
... body it represents , all the cavities of the fossil , down to its minutest recesses , may have become infiltrated with mineral matter . It need hardly be added , that it is in the more modern rocks that we find the fossils , as a rule ...
... body it represents , all the cavities of the fossil , down to its minutest recesses , may have become infiltrated with mineral matter . It need hardly be added , that it is in the more modern rocks that we find the fossils , as a rule ...
Página 13
... body which would have the exact form of the original shell , but which would be really a much later formation , and which would not exhibit under the microscope the minute structure of shell . In the third class of cases we have fossils ...
... body which would have the exact form of the original shell , but which would be really a much later formation , and which would not exhibit under the microscope the minute structure of shell . In the third class of cases we have fossils ...
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Términos y frases comunes
abundant allied Amongst ancient animals attain beds belong Birds Bivalves bones bony Brachiopods Britain calcareous Cambrian carbonate Carboniferous Chalk characteristic clays coal Coal-measures composed consists contain Corals Cretaceous Crinoids Crustaceans Cycads deposits Devonian Elephants Eocene Europe existing species extinct genus feet fishes Foraminifera formation forms fossils Ganoids genera genus Geol geological gigantic Glacial Graptolites Greensand horny Journ Jurassic known Lastly Laurentian less Lias lime limestones living Lower Silurian Mammals marine Mesozoic Miocene Mollusca natural North America numerous occur Old Red Sandstone Oolitic organic origin Owen Palæontographical Society Paleozoic period Permian plants plates Pliocene portion possessed Post-Pliocene present day principal Pterosaurs Quadrupeds regarded represented Reptiles resembling Rhinoceros rocks sands shales shell singular siphuncle skeleton skull Slates strata structure surface tail teeth Tertiary thickness tion tooth Trias Triassic Trilobites types Univalves Upper Miocene Upper Silurian vertebræ whilst yielded the remains
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Página 244 - Ichthyosaurus to cut through the waves. May it not therefore be concluded (since, in addition to these circumstances, its respiration must have required frequent access of air), that it swam upon or near the surface, arching back its long neck like a swan, and occasionally darting it down at the fish which happened to float within its reach.
Página 366 - Description of the skeleton of an extinct gigantic sloth, Mylodon robustus, Owen, with observations on the osteology, natural affinities, and probable habits of the megatherioid quadrupeds in general, London, 4to., 176 pp., 24 pis., 1842.
Página 363 - Eagles, owls, and gulls pursue their prey along the sea-coast; ptarmigan run in troops amongst the bushes; little snipes are busy along the brooks, and in the morasses; the social crows seek the neighbourhood of men's habitations ; and, when the sun shines in spring, one may even sometimes hear the cheerful note of the finch, and in autumn, that of the thrush...
Página 291 - ... formation occupies a middle place in the Eocene series, we are struck with the comparatively modern date to which some of the greatest revolutions in the physical geography of Europe, Asia, and northern Africa must be referred. All the mountain chains, such as the Alps, Pyrenees, Carpathians, and Himalayas, into the composition of whose central and loftiest parts the nummulitic strata enter bodily, could have had no existence till after the middle Eocene period."— Manual, p. 232. A still more...