 | Alexander Wilford Hall - 1880 - Страниц: 544
...natural selection or the survival of the fittest." "Natural selection acts by life and death,— \rj the survival of the fittest, and by the destruction of the less well-fitted individuals ." "Individuals having any advantage, however slight, over others, would have the best chance of surviving... | |
 | Charles Darwin - 1882 - Страниц: 494
...must advance by short and sure, though slow steps. Organs of little apparent Importance, as ajjected by Natural Selection. As natural selection acts by...the destruction of the less well-fitted individuals, — 1 have sometimes felt great difficulty in understanding the origin or formation of parts of little... | |
 | Henry Coke - 1883 - Страниц: 328
...selection," he tells us, "acts only by taking advantage of slight successive variations. She can never take a great and sudden leap, but must advance by short and sure, though slow steps." * " This canon, if we look to the present inhabitants alone of the world, is not strictly correct ;... | |
 | Charles Darwin - 1884 - Страниц: 494
...for natural selection acts only by taking advantage of slight successive variations ; she can never take a great and sudden leap, but must advance by...the destruction of the less well-fitted individuals, — 1 have sometimes felt great difficulty in understanding the origin or formation of parts of little... | |
 | Charles Darwin - 1884 - Страниц: 396
...for natural selection acts only by taking advantage of slight successive variations ; she can never take a great and sudden leap, but must advance by short and sure though slow steps. IMPERFECT CONTRIVANCES OF NATURE ACCOUNTED FOR. If our reason leads us to admire with enthusiasm a... | |
 | Charles Force Deems - 1885 - Страниц: 114
...Climate and Time, p. 355. -)- Origin of Species, p. 286, sixth edition. ^ Natural selection can never take a great and sudden 'leap, but must advance by short and sure, though slow .stepS Origin of Species, p. 156. The ape has been accepted as representing that thing, but there then came... | |
 | Joseph Samuel Exell - 1885 - Страниц: 606
...evolution proceeds only by infinitesimal variations. Mr. Darwin himself says: " Natural selection can never take a great and sudden leap, but must advance by short and sure, though slow steps." J Now, speaking in a general way, the brain-mass of man is about three times that of the highest anthropoid... | |
 | 1885 - Страниц: 998
...proceeds only by infinitesimal variations. Mr. Darwin himself says : " Natural selection can never take a great and sudden leap, but must advance by short and sure, though slow, steps." f Now, speaking in a general way, the brain-mass of man is about three times that of the highest anthropoid... | |
 | Charles Clement Coe - 1895 - Страниц: 648
...to their possessors, and are capable of further development." — (Descent of M,nt. 2nd cd., p. 12.) "As Natural Selection acts by. life and death —...felt great difficulty in understanding the origin or format1on of parts of little importance." — (Origin of Species, p. /y<5.) Speaking of cases where... | |
 | Charles Clement Coe - 1895 - Страниц: 638
...for Natural Selection acts only by taking advantage of slight successive variations ; she can never take a great and sudden leap, but must advance by short and sure, though slow, steps." — (Origin of Species, p. 156.) " On the theory of Natural Selection we can clearly understand the... | |
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Why should not Nature take a sudden leap from structure to structure? On the theory of natural selection, we can clearly understand why she should not; for natural selection acts only by taking advantage of slight successive variations; she can never... 
