Life on the Earth: Its Origin and SuccessionMacmillan and Company, 1860 - Всего страниц: 224 |
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... Tertiary , which express something morę than the knowledge we actually possess , and some- thing different from the idea we wish to convey . While speaking of the Lower Palæozoic Strata and the beautiful system of Life which they ...
... Tertiary , which express something morę than the knowledge we actually possess , and some- thing different from the idea we wish to convey . While speaking of the Lower Palæozoic Strata and the beautiful system of Life which they ...
Стр. 52
... Tertiary occupying 9842 ft . , while in England they are supposed to be 2240. The figures on the left may be used to mark miles of depth , thick- ness of deposits , or periods of unknown duration , according to the purpose in view . The ...
... Tertiary occupying 9842 ft . , while in England they are supposed to be 2240. The figures on the left may be used to mark miles of depth , thick- ness of deposits , or periods of unknown duration , according to the purpose in view . The ...
Стр. 54
... Tertiary Strata . For this reason , to indicate the real affinity of their organic contents to the living creation , I have elsewhere called them Cenozoic . The following table will illustrate this statement 1 Auct . Ehrenberg , Jones ...
... Tertiary Strata . For this reason , to indicate the real affinity of their organic contents to the living creation , I have elsewhere called them Cenozoic . The following table will illustrate this statement 1 Auct . Ehrenberg , Jones ...
Стр. 95
... tertiary strata and existing oceans . Two conspicuous fossil genera , Trigonia and Pho- ladomya , are represented by one living species to each . The former is confined in a fossil state to Mesozoic Strata , and in a recent state to the ...
... tertiary strata and existing oceans . Two conspicuous fossil genera , Trigonia and Pho- ladomya , are represented by one living species to each . The former is confined in a fossil state to Mesozoic Strata , and in a recent state to the ...
Стр. 96
... . Conularia , Theca , and Pterotheca , belong to the Paleozoic Strata ; Hyalæa , Cleodora , and Cuvieria , are both recent and tertiary . Heteropoda . - The symmetrically convolute Belle- rophon , and 96 LIFE ON THE EARTH . "
... . Conularia , Theca , and Pterotheca , belong to the Paleozoic Strata ; Hyalæa , Cleodora , and Cuvieria , are both recent and tertiary . Heteropoda . - The symmetrically convolute Belle- rophon , and 96 LIFE ON THE EARTH . "
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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
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Стр. 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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Стр. 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.
Стр. 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.
Стр. 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.
Стр. 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...
Стр. 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.