| Ernest Albert Parkyn - 1894 - 52 páginas
...words Darwin's definition of Natural Selection. It is as follows : " This preservation of favourable individual differences and variations, and the destruction of those which are injurious, I have called Natural Selection, or Survival of the "Fittest." "It may metaphorically be said that... | |
| Liberty Hyde Bailey - 1896 - 536 páginas
...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." This, then, is Darwinism — that... | |
| Charles Darwin - 1896 - 408 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, or the Survival of the Fittest. Variations neither useful nor injurious... | |
| Charles Darwin - 1896 - 406 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, or the Survival of the Fittest. Variations neither useful nor injurious... | |
| 1897 - 560 páginas
...of Species,"new American edition from sixth English edition, 1886, p. 63) : " 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." If we take this definition, and eliminate... | |
| United States. Department of Agriculture - 1899 - 864 páginas
...tlio natural capacity of all plants to vary furnishing the basis on which the breeder has to work. The prime factor of selection, or, as Darwin calls...and the destruction of those which are injurious," consists in the skillful selection and propagation of plants showing desirable variations. Selection... | |
| Iowa State Horticultural Society - 1899 - 604 páginas
...buds precise counterparts, only proves the fact of infinite variety in nature. "This pressrvation 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 philosophy of Darwin is founded... | |
| 1901 - 698 páginas
...vary in some particular, or, as Darwin puts it, it is "the law of the preservation of I he favourable individual differences and variations, and the destruction of those which are injurious." These variations are mostly brought about by change of environment, such as a removal from a higher... | |
| Ohio State Medical Society - 1902 - 380 páginas
...not effect variations which would be neither useful nor injurious. It implies the "preservation of favorable individual differences and variations and the destruction of those which are injurious,"* such variations as may arise which are beneficial to the being under whatever conditions of life he... | |
| Jacob Gould Schurman - 1903 - 292 páginas
...useful to it under the actual conditions of existence. Or, in Darwin's own words, " 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 process, therefore, does not... | |
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