 ... 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...  Charles Darwin, His Life and Work - Стр. 182авторы: Charles Frederick Holder - 1891 - Страниц: 295Полный просмотр - Подробнее о книге
 | 1861 - Страниц: 376
...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 - Страниц: 828
...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 - Страниц: 476
...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,... | |
 | 1860 - Страниц: 800
...should conquer, see How false, how brief his victory ! DARWIN ON THE ORIGIN OF SPECIES. [Continued.] " I CAN entertain no doubt, after the most deliberate...the main, but not exclusive means of modification." This is the kernel of the new theory, the Darwinian creed, as recited at the close of the introduction... | |
 | 1860 - Страниц: 794
...conquer, see How false, how brief hie victory 1 229 DARWIN ON THE ORIGIN OF SPECIES. [Continued.] " I CAN entertain no doubt, after the most deliberate...the main, but not exclusive means of modification." This is the kernel of the new theory, the Darwinian creed, as recited at the close of the introduction... | |
 | Crosthwaite and co - 1860 - Страниц: 622
...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 - Страниц: 656
...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 - Страниц: 580
...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 - Страниц: 966
...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... | |
 | Asa Gray - 1861 - Страниц: 68
...to demolish the theory ; — with what result our readers shall be duly informed. 12 ARTICLE II. " I can entertain no doubt, after the most deliberate...the main, but not exclusive, means of modification." This is the kernel of the new theory, the Darwinian creed, as recited at the close of the introduction... | |
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