Darwiniana: EssaysAppleton, 1894 - 475페이지 |
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37 페이지
Essays Thomas Henry Huxley. remark that , once in existence , many varieties obey the fundamental law of reproduction that like tends to produce like ; and their offspring exemplify it by tending to exhibit the same deviation from the ...
Essays Thomas Henry Huxley. remark that , once in existence , many varieties obey the fundamental law of reproduction that like tends to produce like ; and their offspring exemplify it by tending to exhibit the same deviation from the ...
45 페이지
... varieties . If a male and a female , selected from each 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 ...
... varieties . If a male and a female , selected from each 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 ...
47 페이지
... varieties , are almost sterile when crossed ; while both animals and plants , which have always been regarded by naturalists as of distinct species , turn out , when the test is applied , to be perfectly fertile . Again , the sterility ...
... varieties , are almost sterile when crossed ; while both animals and plants , which have always been regarded by naturalists as of distinct species , turn out , when the test is applied , to be perfectly fertile . Again , the sterility ...
49 페이지
... varieties , or sufficiently alike to be considered as varieties , and their mon- grel offspring , are very generally , but not quite universally , fertile . Nor is this nearly general and perfect fertility sur- prising , when we ...
... varieties , or sufficiently alike to be considered as varieties , and their mon- grel offspring , are very generally , but not quite universally , fertile . Nor is this nearly general and perfect fertility sur- prising , when we ...
54 페이지
... varieties and races , and therefore in an altogether natural way ; and it is a probable , though not a necessary consequence of this hypothesis , that all living beings have arisen from a single stock . With respect to the origin of ...
... varieties and races , and therefore in an altogether natural way ; and it is a probable , though not a necessary consequence of this hypothesis , that all living beings have arisen from a single stock . With respect to the origin of ...
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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