I am fully convinced that species are not immutable ; but that those belonging to what are called the same genera are lineal descendants of some other and generally extinct species, in the same manner as the acknowledged varieties of any one species are... The Popular Science Monthly - Página 761890Vista completa - Acerca de este libro
| Karl Gjellerup - 1881 - 422 páginas
...og Forskjellen: Variation etc. Vol. II, 375 Note. a) ib p. 264. 3) Orig. of Sp. Slutng of Introduct: I am convinced that Natural Selection has been the...important but not the exclusive means of modification. •') As they (the social instincts) are highly beneficial to the species, they have in all probability... | |
| 1881 - 334 páginas
...of its overpowering importance, and the more confidently we claim, in Darwin's own words, that it " has been the most important, but not the exclusive, means of modification." Now, in the latter quotation it is manifest that the " co-operation " which is spoken of takes cognizance... | |
| Charles Darwin - 1882 - 494 páginas
...convinced that species are riot immutable ; but that those belonging to what are called the same genera are lineal descendants of some other and generally extinct...descendants of that species. Furthermore, I am convinced thai "Natural Selection has been tie most important, but not the •xclusive, means of modification.... | |
| Benjamin G. Ferris - 1883 - 474 páginas
...animals and plants have descended from one prototype." called the same genera are lineal descendents of some other and generally extinct species, in the...I am convinced that Natural Selection has been the main but not exclusive means of modification. " (2-13). Again, "by my theory, these allied species... | |
| Charles Darwin - 1883 - 494 páginas
...called the same genera are lineal descendants of some other and generally extinct species, in the name manner as the acknowledged varieties of any one species...Furthermore, I am convinced that Natural Selection has been tue •no* important, but not the exclusive, means of modification. CHAPTER I. VARIATION UNDEE DOMESTICATION.... | |
| Charles Darwin - 1884 - 494 páginas
...called the same genera are lineal descendants of some other and generally extinct species, in the Kiuue manner as the acknowledged varieties of any one species...I am convinced that Natural Selection has been the inor. important, but not the iseluaive, means of modification. CHAPTER I. VARIATION UNDER DOMESTICATION.... | |
| 1910 - 844 páginas
...always subsidiary. This is evident from the words which follow those above quoted, where he says : "Furthermore, I am convinced that natural selection...important, but not the exclusive, means of modification." Darwin's evolution, then, was the formulation of the broad generalization. His main effort was to overthrow... | |
| Alfred Russel Wallace - 1889 - 526 páginas
...convinced that species are not immutable ; but that those Belonging to what are called the same genera are lineal descendants of some other and generally extinct...means of modification." It should be especially noted that all which is here claimed is now almost universally admitted, while the criticisms of Darwin's... | |
| Charles Darwin - 1889 - 446 páginas
...convinced that species are not immutable ; but that those belonging to what are called the same genera are lineal descendants of some other and generally extinct...Selection has been the most important, but not the exclusivej means of modification. CHAPTER I. VARIATION UNDER DOMESTICATION. Causes of Variability —... | |
| Asa Gray - 1889 - 524 páginas
...convinced that species are not immutable ; but that those belonging to what are called the same genera are lineal descendants of some other and generally extinct...Furthermore, I am convinced that Natural Selection has been tlio main, but not exclusive, means of modification." This is the kernel of the new theory, the Darwinian... | |
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