Darwiniana: EssaysAppleton, 1894 - 475페이지 |
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44개의 결과 중 6 - 10개
28 페이지
... group of animals or plants they so denominate than what has just been stated . Even the most decided advocates of the received doctrines respecting species admit this . " I apprehend , " says Professor Owen , 1 " that few naturalists ...
... group of animals or plants they so denominate than what has just been stated . Even the most decided advocates of the received doctrines respecting species admit this . " I apprehend , " says Professor Owen , 1 " that few naturalists ...
32 페이지
... the production , in course of time , of an indefinitely large group , the whole of the mem- bers of which are at once very similar and are blood relations , having descended from the same parent , or. 32 II THE ORIGIN OF SPECIES.
... the production , in course of time , of an indefinitely large group , the whole of the mem- bers of which are at once very similar and are blood relations , having descended from the same parent , or. 32 II THE ORIGIN OF SPECIES.
33 페이지
... group of animals , or plants , had thus descended , would be ordinarily considered sufficient to entitle them to the ... groups we call species may , according to the known laws of reproduction , have descended from a single stock , and ...
... group of animals , or plants , had thus descended , would be ordinarily considered sufficient to entitle them to the ... groups we call species may , according to the known laws of reproduction , have descended from a single stock , and ...
44 페이지
... groups distinguished from one another by constant , not sexual , morphological characters , it is clear that the physiological definition of species is likely to clash with the morphological definition . No one would hesitate to ...
... groups distinguished from one another by constant , not sexual , morphological characters , it is clear that the physiological definition of species is likely to clash with the morphological definition . No one would hesitate to ...
45 페이지
... group , produce offspring , and that off- spring is fertile with others produced in the same way , the groups are races and not species . If , on the other hand , no result ensues , or if the offspring are infertile with others produced ...
... group , produce offspring , and that off- spring is fertile with others produced in the same way , the groups are races and not species . If , on the other hand , no result ensues , or if the offspring are infertile with others produced ...
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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