 | 414 стор.
...frequently have no perceptible connection. Mr. Romanes starts from the evident and well-known fact that, in every generation of every species, a great many...more individuals are born than can possibly survive; and from that he, with his master, deduces the conclusion that those will survive who are fittest to... | |
 | George John Romanes - 1892 - 544 стор.
...detail. It is a matter of observable fact that all plants and animals arc perpetually engaged in what Darwin calls a " struggle for existence." That is...live? Assuredly those which are best fitted to live, in whatever respect, or respects, their superiority of fitness may consist. Hence it follows that Nature,... | |
 | James Mark Baldwin, James McKeen Cattell, Howard Crosby Warren, John Broadus Watson, Herbert Sidney Langfeld, Carroll Cornelius Pratt, Theodore Mead Newcomb - 1909 - 478 стор.
...selection (including sexual selection), and heredity. It is an observable fact, says Romanes, " that in every generation of every species a great many...consequence a perpetual battle for life going on among all of the constituent individuals of any given generation. Now, in this struggle for existence, which... | |
 | 1902 - 582 стор.
...Scientific evidence of organic evolution. It is a matter of observable fact [says Professor Romanes] that all plants and animals are perpetually engaged...be victorious and live? Assuredly those which are 1902] Education and evolution 65 best fitted to live; the weakest and the least fitted to live will... | |
 | Daniel Coit Gilman, Harry Thurston Peck, Frank Moore Colby - 1906 - 978 стор.
...animals are perpetually engaged in the strug-gle for existence. This strife consiste in the fact that in every generation of every species a great many...more individuals are born than can possibly survive. Now nature "selects the best individuals out of each generation to live." "And not only so, but as... | |
 | Daniel Coit Gilman, Harry Thurston Peck, Frank Moore Colby - 1909 - 982 стор.
...animals are perpetually engaged in the struggle for existence. This strife consists in the fact that in every generation of every species a great many...more individuals are born than can possibly survive. Now nature "selects the beat individuals out of each generation to live." "And not only so, but as... | |
 | Francis Stuart Chapin - 1913 - 348 стор.
...tends to increase the number of individuals in any given species in geometrical ratio. This means that in every generation of every species a great many...more individuals are born than can possibly survive. The result is that those born with certain weaknesses or under unfavorable conditions are the ones... | |
 | James Edwin Creighton - 1925 - 312 стор.
...selection (including sexual selection), and heredity. It is an observable fact, says Romanes, "that in every generation of every species a great many...consequence a perpetual battle for life going on among all of the constituent individuals of any given generation. Now, in this struggle for existence, which... | |
 | James Edwin Creighton - 1925 - 318 стор.
...selection (including sexual selection), and heredity. It is an observable fact, says Romanes, "that in every generation of every species a great many...are born than can possibly survive; so that there is hi consequence a perpetual battle for life going on among all of the constituent individuals of any... | |
 | Frank Chapman Sharp - 1928 - 584 стор.
...follows: "It is a matter of observable fact that all plants and animals are perpetually engaged in what Darwin calls a 'struggle for existence.' That is to...live? Assuredly those which are best fitted to live, in whatever respect, or respects, their superiority or fitness may consist. Hence it follows that Nature,... | |
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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. 
