 ... been stated that I attribute the modification of species exclusively to natural selection, I may be permitted to remark that in the first edition of this work, and subsequently, I placed in a most conspicuous position — namely, at the close of the...  The Atlantic Monthly - Página 2071860Vista completa - Acerca de este libro
 | 1861 - 376 páginas
...assumption regarding Darwin's object, for in the introductory chapters to his work, we find him stating, " that natural selection has been the main but not exclusive means of modification" (Darwin's Origin of Species, p. 6, 5th 1000). Then, again, with reference to the controlling power... | |
 | 1875 - 828 páginas
...descendants of that species. • Dr. Hodge. As regards the mode in which all this has heen effected, he says, "I am convinced that natural selection has been the main, but not exclusive, means of modification." Such are the leading points of the Darwinian theory respecting the origin of species, as stated by... | |
 | American Association for the Advancement of Science - 1888 - 476 páginas
...encounter in their studies. Darwin has distinctly said in his first edition of the "Origin of Species," "I am convinced that natural selection has been the main but not the exclusive means of modification;" and in his sixth edition of the same work, in quoting these words,... | |
 | Crosthwaite and co - 1860 - 622 páginas
...interesting work on the Origin of Species, its author declares his matured opinions in these words : — " I am fully convinced that species are not immutable...the main but not exclusive means of modification." These convictions, we shall find, have been arrived at from an analysis of the circumstances and rules... | |
 | 1860 - 656 páginas
...the same genera are lineal descendants of some other and generally extinct species, in the same way as the acknowledged varieties of any one species are...the main, but not exclusive, means of modification." — P. 6. Such, in few words, is Mr. Darwin's profession of faith. It must be acknowledged, that the... | |
 | 1860 - 580 páginas
...the same genera are lineal descendants of some other and generally extinct species, in the same way as the acknowledged varieties of any one species are...Selection has been the main, but not exclusive, means of modification."—PG Such, in few words, is Mr Darwin's profession of faith. It must be acknowledged,... | |
 | 1860 - 966 páginas
...generally extinct species, in the same manner as the acknowledged varieties of any one species arc the descendants of that species. Furthermore, I am...the main, but not exclusive means of modification." Thus we perceive that there are three essential elements in this theory — variability, struggle for... | |
 | 1861 - 824 páginas
...some other, and generally extinct species, in the same manner as the acknowledged varieties of any one species. Furthermore, I am convinced that natural...main but not exclusive means of modification."— P. 13. " It may be asked how far I extend the doctrine of the modification of species. The question... | |
 | John Duns - 1863 - 650 páginas
...the same genera are lineal descendants of some other and generally extinct species, in the same way as the acknowledged varieties of any one species are...the main, but not exclusive, means of modification." — P. 6. Such, in few words, is Mr. Darwin's profession of faith. It is very clearly and distinctly... | |
 | Charles Darwin - 1866 - 668 páginas
...past geological epochs in its history. Although much remains obscure, and will long remain obscure, I can entertain no doubt, after the most deliberate...the main but not exclusive means of modification. CHAPTER I. VARIATIOX UNDER DOMESTICATION. Causes of Variability — Effects of Habit — Correlation... | |
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