Life on the Earth: Its Origin and SuccessionMacmillan and Company, 1860 - Всего страниц: 224 |
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Стр. 19
... called attention to this remarkable fact , and Dr Hooker , recently , has stated that no less than 222 species of British plants extend to India , and oblige us to look to a common 1 E. Forbes , in Memoirs of Geological Survey , Vol . 1 ...
... called attention to this remarkable fact , and Dr Hooker , recently , has stated that no less than 222 species of British plants extend to India , and oblige us to look to a common 1 E. Forbes , in Memoirs of Geological Survey , Vol . 1 ...
Стр. 26
... called adaptive - terms which imply the recognition of law and modification , mind and choice - a Creator who works by rule , and who has provided for wonderful diversity in his works and for the persistence through them all of some ...
... called adaptive - terms which imply the recognition of law and modification , mind and choice - a Creator who works by rule , and who has provided for wonderful diversity in his works and for the persistence through them all of some ...
Стр. 28
... called typical which seems rather to be marked by absence of all but elementary organization - may be called cellular or rudimentary . This group , however , is but provisional , and will pro- bably be hereafter better divided according ...
... called typical which seems rather to be marked by absence of all but elementary organization - may be called cellular or rudimentary . This group , however , is but provisional , and will pro- bably be hereafter better divided according ...
Стр. 32
... called the foot , which in all the races mentioned loses its usual function of locomotion . The attachment of Actinia by its broad base , and of Patella by its circular mantle , is not of so perma- nent a character . Perhaps this is ...
... called the foot , which in all the races mentioned loses its usual function of locomotion . The attachment of Actinia by its broad base , and of Patella by its circular mantle , is not of so perma- nent a character . Perhaps this is ...
Стр. 36
... called a foot , which enables the Cockle to spring some distance , and the Unio to cut its way through the slime . Pholades bore into chalk and much harder limestone by turning round their body and its sharply serrated shelly covering ...
... called a foot , which enables the Cockle to spring some distance , and the Unio to cut its way through the slime . Pholades bore into chalk and much harder limestone by turning round their body and its sharply serrated shelly covering ...
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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. 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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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.