 | Dukinfield Henry Scott - 1911 - 264 páginas
...modified form" (Origin of Species, p. 3). THE DARWINIAN THEORY 11 "This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest" (ibid., p. 63). Darwin liked the term... | |
 | Liberty Hyde Bailey - 1912 - 514 páginas
...them, how does she endeavor to fix them, or to make them more or less stable ? " This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection or the Survival of the Fittest." This is the philosophy which was propounded... | |
 | Liberty Hyde Bailey - 1913 - 506 páginas
...them, how does she endeavor to fix them, or to make them more or less stable? " This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection or the Survival of the Fittest." This is the philosophy which was propounded... | |
 | Richard Johnson Walker - 1913 - 592 páginas
...variation in the least degree injurious would be rigidly destroyed. This preservation of favourable, individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection."1 This theory fails for want of facts to support it : since Nature... | |
 | 1915 - 198 páginas
...differences favor the survival of the individual, others favor his death, soon or late. "This preservation of favorable individual differences and variations, and the destruction of those which are injurious. I have called natural selection, or the survival of the fittest," Darwin wrote; and I follow his definition... | |
 | George William Nasmyth - 1916 - 458 páginas
...might be of use to each being under changing conditions of life. . . . This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest.1 We shall best understand the probable... | |
 | Paul Popenoe, Roswell Hill Johnson - 1918 - 530 páginas
...reproduce, and if the best stock survives to perpetuate its kind. "This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called natural selection, or the survival of the fittest," Darwin wrote; and he went on to show... | |
 | Hiram Delos Densmore - 1920 - 486 páginas
...over others, would have the best chance of surviving and procreating their kind. This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called natural selection, or the survival of the fittest." The ideas concerning selection through... | |
 | 1921 - 560 páginas
...sure that any variation in the least degree injurious would be rigidly destroyed. This preservation of favorable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest . Variations neither useful nor injurious... | |
 | 1887 - 452 páginas
...tendency." (" Origin of Species," page 62: American edition, 1880.) Again he says : " This preservation of individual differences and variations, and the destruction of those which are injurious, I have called natural selection, or the survival of the fittest." (Ibid., page 63.) No doubt but that... | |
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This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or the Survival of the Fittest. 
