Darwiniana: EssaysAppleton, 1894 - 475페이지 |
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35 페이지
... kind . In the year 1791 , one of the ewes presented her owner with a male lamb , differing , for no assignable reason , from its parents by a proportionally long body and short bandy legs , whence it was unable to emulate its relatives ...
... kind . In the year 1791 , one of the ewes presented her owner with a male lamb , differing , for no assignable reason , from its parents by a proportionally long body and short bandy legs , whence it was unable to emulate its relatives ...
45 페이지
... kind , are equally fertile . On the other hand , there can be no doubt that the individuals of many natural species are either absolutely infertile if crossed with individuals of other species , or , if they give rise to hybrid ...
... kind , are equally fertile . On the other hand , there can be no doubt that the individuals of many natural species are either absolutely infertile if crossed with individuals of other species , or , if they give rise to hybrid ...
48 페이지
... kind : namely , that the crossing of forms , only slightly different , is favourable to the vigour and fertility of the offspring ; and that slight changes in the con- ditions of life are apparently favourable to the vigour and ...
... kind : namely , that the crossing of forms , only slightly different , is favourable to the vigour and fertility of the offspring ; and that slight changes in the con- ditions of life are apparently favourable to the vigour and ...
78 페이지
... kind - the most compendious statement of well - sifted facts bearing on the doctrine of species that has ever appeared . The chapters on Variation , on the Struggle for Existence , on Instinct , on Hybridism , on the. 78 II THE ORIGIN OF ...
... kind - the most compendious statement of well - sifted facts bearing on the doctrine of species that has ever appeared . The chapters on Variation , on the Struggle for Existence , on Instinct , on Hybridism , on the. 78 II THE ORIGIN OF ...
84 페이지
... kind , it is the only one which has been able to persist in the conditions in which it is found . Teleology implies that the organs of every organism are perfect and cannot be improved ; the Darwinian theory simply affirms that they ...
... kind , it is the only one which has been able to persist in the conditions in which it is found . Teleology implies that the organs of every organism are perfect and cannot be improved ; the Darwinian theory simply affirms that they ...
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action adapted admit Agamogenesis Ancon animalcules animals animals and plants appears biology birds body called causes character Charles Darwin course creation Crustacea Darwin Darwin's views Darwinian deposited direct doctrine of evolution doubt Dysteleology endeavour epigenesis epoch Erasmus Darwin essay evidence ex nihilo exhibited existence extinct fact favour Flourens geological germ give rise groups horse Hyæna hypothesis inorganic world inquiry kind knowledge Lamarck laws lectures less living Maillet male matter means ment Mivart modification natural selection naturalists objections observation offspring organic nature organisation Origin of Species ovum parent peculiar phenomena philosophical physiological pigeons present primitive stock principles produced Quarterly Reviewer question races reason remarkable result scientific selective breeding sensations sense special creation speculations structure Suarez substantial forms suppose Teleology tendency theory thing thought tion toes truth variation varieties vegetabilia vegetable vera causa Wallace whole