The Scientific Evidences of Organic EvolutionMacmillan and Company, 1882 - 88 стор. |
З цієї книги
Результати 1-5 із 8
Сторінка 10
... simple physical explanation , all per- sons with a scientific habit of mind at once abandoned the metaphysical explanation . Now , to be consistent , the above - mentioned professors , and all who think with them , ought still to adhere ...
... simple physical explanation , all per- sons with a scientific habit of mind at once abandoned the metaphysical explanation . Now , to be consistent , the above - mentioned professors , and all who think with them , ought still to adhere ...
Сторінка 22
... , of course , is purposely chosen as a very simple illustration ; but it exemplifies the general fact that the guiding principle of scientific classification is the comparing of organism 22 THE SCIENTIFIC EVIDENCES OF.
... , of course , is purposely chosen as a very simple illustration ; but it exemplifies the general fact that the guiding principle of scientific classification is the comparing of organism 22 THE SCIENTIFIC EVIDENCES OF.
Сторінка 40
... simple answer to supply , viz . , that when , from changed conditions of life , an organ which was previously useful becomes useless , natural selection , combined with disuse and so - called economy of growth , will cause it to dwindle ...
... simple answer to supply , viz . , that when , from changed conditions of life , an organ which was previously useful becomes useless , natural selection , combined with disuse and so - called economy of growth , will cause it to dwindle ...
Сторінка 46
... simple reason that the whole body of geological evidence is for the most part of one kind , which although of a very massive , is of a very simple character . That is to say , apart from the increasingly numerous cases , such as the one ...
... simple reason that the whole body of geological evidence is for the most part of one kind , which although of a very massive , is of a very simple character . That is to say , apart from the increasingly numerous cases , such as the one ...
Сторінка 47
... simple to the many and complex - has been the law of organic nature . And of course it is need- less to say that this is precisely the law to which the process of descent with adaptive modifica- tion would of necessity give rise . 1 ...
... simple to the many and complex - has been the law of organic nature . And of course it is need- less to say that this is precisely the law to which the process of descent with adaptive modifica- tion would of necessity give rise . 1 ...
Інші видання - Показати все
Загальні терміни та фрази
adaptive modification adduced anatomical feature apes aquatic argument from geology become branches branchiæ cause classification crocodile Crown 8vo Darwin Deity descent with adaptive doctrine of evolution embryology evidence in favour F.R.S. Illustrated fact favour of organic fish five toes fossil species frogs Galapagos Archipelago genera geological hereditary descent highly organised hypothesis ideal type instance instincts intelligent design limbs lines of evidence logical mammals Mivart natural selection natural theologians newts numberless observed oceanic islands organic evolution organic nature organic types Origin of Species phenomena plants and animals porpoise present Professor Huxley quadrumana quadrupeds inhabiting reason resemble rudi rudiment rudimentary scientific classification Sir JOHN LUBBOCK special creation theory special creationists special design specially created species of plants specific type supernatural design suppose teleology theory of descent theory of design theory of evolution theory of natural tion transmutation of species typical structures vertebrata vertebrate whale whole
Популярні уривки
Сторінка 3 - natural selection." Nature, so to speak, selects the best individuals out of each gen'eration to live. And not only so, but as these favored individuals transmit their favorable qualities to their offspring, according to the fixed laws of heredity, it follows that the individuals composing each successive generation have a general tendency to be better suited to their surroundings than were their forefathers. And this follows, not...
Сторінка 76 - ... conceivable supposition that every species of Rhinoceros and every species of Hyaena, in the long succession of forms between the Miocene and the present species, was separately constructed out of dust, or out of nothing, by supernatural power; but until I receive distinct evidence of the fact, I refuse to run the risk of insulting any sane man by supposing that he seriously holds such a notion.
Сторінка 61 - as the white man's rat has driven away the native rat, so the European fly drives away our own ; and as the clover kills our fern, so will the Maori disappear before the white man himself.
Сторінка 49 - A second great fact which strikes us in our general review is, that barriers of any kind, or obstacles to free migration, are related in a close and important manner to the differences between the productions of various regions.
Сторінка 39 - Throughout the animal and vegetable kingdoms we constantly meet with organs which are the dwarfed and useless representatives of organs which, in other and allied kinds of animals and plants, are of large size and functional utility. Thus, for instance, the unborn whale has rudimentary teeth, which are never destined to cut the gums ; and we all know that our own rudimentary tail is of no practical service. Now, rudimentary organs of this kind are of such 1 This consideration is, I believe, original.
Сторінка 3 - That is to say, in every generation of every species a great many more individuals are born than can possibly survive; so that there is in consequence a perpetual battle for life going on among all the constituent individuals of any given generation.
Сторінка 41 - Now, is it a worthy conception of Deity that, while neglecting to maintain his unity of ideal in the case of nearly all the numerous species of snakes, he should have added a tiny rudiment in the case of the Python— and even in that case should have maintained his ideal very inefficiently, inasmuch as only two limbs, instead of four, are represented...