 | 1860 - 566 lehte
...best climbers would escape the tigers, the worst would be rigidly destroyed. Buffon would have seen no more reason to doubt that these causes, in a thousand...produce a marked effect, and adapt the form of the wild man to obtain fruits rather * By Darwin and 'Wallace, 'Proceedings of the Linnaeaa Society,' August,... | |
 | British Association for the Advancement of Science - 1859 - 750 lehte
...Wallace illustrated this principle by ingenious suppositions, of which I select the following: — " To give an imaginary example from changes in progress...can be improved by selection and careful breeding*." Observation of animals in a state of nature is required to show their degree of plasticity, or the... | |
 | 1859 - 578 lehte
...be that the fox or dog would be driven to try to cateh more hares : his organization, however, bcing slightly plastic, those individuals with the lightest...would produce a marked effect, and adapt the form o the fox or dog to the catehing of hares instead of rabbits, than tha greyhounds con be improved by... | |
 | 1860 - 894 lehte
...D:ir\vin and Wallace, " Proceedings of the Linnœau Society,'1 August, 1858, p. 45. Buffon would have seen no more reason to doubt that these causes, in a thousand...produce a marked effect, and adapt the form of the wild man to obtain fruits rather than grains, than Darwin now believes that man can be improved by... | |
 | Richard Owen - 1861 - 490 lehte
...and would tend to live longer, and to surviee during that time of the year when food was scareest ; they would also rear more young, which would tend...effect, and adapt the form of the fox or dog to the catehing of hares instead of rabbits, than that greyhounds can be improeed by selection and careful... | |
 | Richard Owen - 1861 - 552 lehte
...no more reason to doubt that these causes in a thousand generations would produce a marked eflVct, and adapt the form of the fox or dog to the catching...can be improved by selection and careful breeding." f Yet this con* Proceedings of the Liantwm Society, Aii/rust IS5S, p. 57. t Proceedings of the Liansean... | |
 | Richard Owen - 1868 - 1046 lehte
...the year when food was scarcest ; they would also rear more young, which would tend to inherit those slight peculiarities. The less fleet ones would be...thousand generations would produce a marked effect, and ad.ipt the form of the fox or dog to the catching of hares instead of rabbits, than that greyhounds... | |
 | 1869 - 468 lehte
...the year when food was scarcest ; they would also rear more young, which would tend to inherit those slight peculiarities. The less fleet ones would be...can be improved by selection and careful breeding. 'f So Geoffroy Saint-Hilaire also wrote : — ' Si ces modifications amenent des eff-ets nuisibles,... | |
 | 1869 - 488 lehte
...the year when food was scarcest ; they would also rear more young, which would tend to inherit those slight peculiarities. The less fleet ones would be...greyhounds can be improved by selection and careful breeding.'f So Geoffroy Saint-Hilaire also wrote : — ' Si ces modifications amenent des effets nuisibles,... | |
 | William Thomas Greene - 1884 - 540 lehte
...of rabbits very slowly to decrease, and the number of hares to increase; the effect of this would bo that the fox, or dog, would be driven to try to catch...can be improved by selection and careful breeding.' Yet this condition of things, if followed out to its full consequences, seems to lead only to my original... | |
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... individuals with the lightest forms, longest limbs, and best eyesight, let the difference be ever so small, would be slightly favoured, and would tend to live longer, and to survive during that time of the year when food was scarcest; they would also... 
