Life on the Earth: Its Origin and SuccessionMacmillan and Company, 1860 - 224 من الصفحات |
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الصفحة
... cretaceous deposits ; the latest geological age being chiefly distinguishable by the presence and activity of MAN , for whom the Book of the Strata , inscribed with the earlier Wonders of Nature , has been given to be opened with care ...
... cretaceous deposits ; the latest geological age being chiefly distinguishable by the presence and activity of MAN , for whom the Book of the Strata , inscribed with the earlier Wonders of Nature , has been given to be opened with care ...
الصفحة 51
... Cretaceous . Life . Man , Placental Mammals . Mesozoic . Oolitic . Marsupial Mammals . Triassic . Permian . Carboniferous . Reptiles . Paleozoic . Devonian , Siluro- Cambrian . Land Plants . Fishes . Monomy . Echinod . Pterop . Heterop ...
... Cretaceous . Life . Man , Placental Mammals . Mesozoic . Oolitic . Marsupial Mammals . Triassic . Permian . Carboniferous . Reptiles . Paleozoic . Devonian , Siluro- Cambrian . Land Plants . Fishes . Monomy . Echinod . Pterop . Heterop ...
الصفحة 54
... Cretaceous Strata is both fossil and living , and it is not possible to dis- tinguish some forms of fossil and living Foramini- fera1 . With the exceptions already noted , if they be really such , the whole living creation , examined by ...
... Cretaceous Strata is both fossil and living , and it is not possible to dis- tinguish some forms of fossil and living Foramini- fera1 . With the exceptions already noted , if they be really such , the whole living creation , examined by ...
الصفحة 64
... Series dies out through the Permian system , and the Mesozoic rises slowly in the Trias ; so the Mesozoic Series dies away in the uppermost beds of the Cretaceous system , and the Cenozoic Series 64 LIFE ON THE EARTH .
... Series dies out through the Permian system , and the Mesozoic rises slowly in the Trias ; so the Mesozoic Series dies away in the uppermost beds of the Cretaceous system , and the Cenozoic Series 64 LIFE ON THE EARTH .
الصفحة 65
Its Origin and Succession John Phillips. beds of the Cretaceous system , and the Cenozoic Series grows slowly through the lowest Eocene to a maximum in the later tertiaries . A depression in the maximum occurs in the Palæ- ozoic Series ...
Its Origin and Succession John Phillips. beds of the Cretaceous system , and the Cenozoic Series grows slowly through the lowest Eocene to a maximum in the later tertiaries . A depression in the maximum occurs in the Palæ- ozoic Series ...
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عبارات ومصطلحات مألوفة
affinity ages Ammonites Amorphozoa ancient Annelida appear atmosphere beds Brachiopoda British BROOKE FOSS WESTCOTT Carbon Carboniferous Cenozoic Cenozoic Strata Cephalopoda Cetacea Chalk classes Clay climate cloth creation Cretaceous Crocodilia Crown 8vo Crustacea deposits Dimyaria distribution earlier earliest earth Echinodermata effect English epoch equal examples existing Fcap Fishes forms fossil freshwater Gasteropoda genera genus geological gilt leaves globe Goniatites groups heat History hypothesis Insects land Lias limestone limited Lingula living Llandeilo Mammalia marine mean temperature Mesozoic Mesozoic Period modern Oceans Mollusca Monomyaria naturalists nature number of species occur Oolitic organic origin Paleozoic Paleozoic Strata perhaps phenomena plants and animals Polyzoa prevalent Professor races recent regard remarkable Reptiles rivers rocks Royal 16mo Second Edition sediments Sermons shells shew Silurian Stonesfield Strata structure succession suppose surface Teleosaurus thickness tion traced University of Cambridge Upper variations vegetable whole zone Zoophyta وو
مقاطع مشهورة
الصفحة 202 - As all the living forms of life are the lineal descendants of those which lived long before the Cambrian epoch, we may feel certain that the ordinary succession by generation has never once been broken, and that no cataclysm has desolated the whole world.
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الصفحة 203 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
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الصفحة 202 - Therefore I should infer from analogy that probably all the organic beings which have ever lived on this earth, have descended from some one primordial form, into which life was first breathed.
الصفحة 201 - I formerly entertained, namely, that each species has been independently created, is erroneous. I am fully convinced that species are not immutable; but that those belonging to what are called the same genera are lineal descendants of some other and generally extinct species, in the same manner as the acknowledged varieties of any one species are the descendants of that species. Furthermore, I am convinced that Natural Selection has been the main, but not exclusive, means of modification.
الصفحة 201 - I cannot doubt that the theory of descent with modification embraces all the members of the same great class or kingdom. I believe that animals are descended from at most only four or five progenitors, and plants from an equal or lesser number.
الصفحة 203 - It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth...
الصفحة 186 - The intermixture of distinct species is guarded against by the aversion of the individuals composing them to sexual union, or by the sterility of the mule offspring. It does not appear that true hybrid races have ever been perpetuated for several generations, even by the assistance of man; for the cases usually cited relate to the crossing of mules with individuals of pure species, and not to the intermixture of hybrid with hybrid.