 | Victoria Institute (Great Britain) - 1885 - 426 páginas
...the other side. Tyndall (Belfast Address, British Association, 1874) says : — " Natural selection acts by the preservation and accumulation of small...modifications, each profitable to the preserved being " ; (and Wallace) : " It is a fundamental doctrine of evolution that all changes of form and structure,... | |
 | Joseph Smith Van Dyke - 1886 - 494 páginas
...beneficial." " Every variation which is not inherited is unimportant for us." " Natural selection acts only by the preservation and accumulation of small inherited modifications, each profitable to the preserved species." " Unless favorable variations be inherited by some at least of the offspring, nothing can... | |
 | E. Edmond - 1887 - 270 páginas
...preserves such variations as arise and are beneficial to the being under its conditions of life ; it acts by the preservation and accumulation of small...inherited modifications, each profitable to the preserved, and it has free scope for the work of improvement; it modifies and adapts the structure to a score... | |
 | E. Edmond - 1887 - 268 páginas
...preserves such variations as arise and are beneficial to the being under its conditions of life; it acts by the preservation and accumulation of small...inherited modifications, each profitable to the preserved, and it has free scope for the work of improvement; it modifies and adapts the structure to a score... | |
 | Charles Darwin - 1896 - 408 páginas
...of the deepest valleys or the formation of long lines of inland cliffs. Natural selection acts only by the preservation and accumulation of small inherited...modifications, each profitable to the preserved being ; and as modern geology has almost banished such views as the excavation of a great valley by a single... | |
 | Charles Darwin - 1896 - 406 páginas
...of the deepest valleys or the formation of long lines of inland cliffs. Natural selection acts only by the preservation and accumulation of small inherited...modifications, each profitable to the preserved being ; and as modern geology has almost banished such views as the excavation of a great valley by a single... | |
 | Jabez Thomas Sunderland, Brooke Herford, Frederick B. Mott - 1897 - 604 páginas
...of that which the gardener would call a "sport." Or, as Darwin puts it, "natural selection acts only by the preservation and accumulation of small inherited...modifications, each profitable to the preserved being." exceptional bud which a plant throws out, we know not why. He was that exceptional throw of nature's... | |
 | William Keith Brooks - 1899 - 356 páginas
...only why the unfit are exterminated. "Natural selection," says Darwin ("Origin," p. 75), "acts only by the preservation and accumulation of small inherited...modifications, each profitable to the preserved being." This has seemed, and still seems, to many, a valid reason for questioning its value as a scientific... | |
 | John Clark Ridpath - 1899 - 544 páginas
...of the deepest valleys or the formation of long lines of inland cliffs. Natural selection acts only by the preservation and accumulation of small inherited...modifications, each profitable to the preserved being ; and as modern geology has almost banished such views as the excavation of a great valley by a single... | |
 | David Josiah Brewer - 1900 - 462 páginas
...of the deepest valleys or the formation of long lines of inland cliffs. Natural selection acts only by the preservation and accumulation of small inherited...modifications, each profitable to the preserved being; and as modern geology has almost banished such views as the excavation of a great valley by a single... | |
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Natural selection acts only by the preservation and accumulation of small inherited modifications, each profitable to the preserved being... 
