Darwiniana: EssaysD. Appleton, 1901 - 475페이지 |
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3 페이지
... known from a mere variety ? Is there no criterion of species ? Great authori- ties affirm that there is that the unions of members of the same species are always fertile , while those of distinct species are either sterile , or their ...
... known from a mere variety ? Is there no criterion of species ? Great authori- ties affirm that there is that the unions of members of the same species are always fertile , while those of distinct species are either sterile , or their ...
7 페이지
... known species of animal or plants ( witness our recent examples from the work of Sir Emerson Tennent , on Ceylon ) , and yet they have almost always a sort of general family resemblance to the animals and plants of the nearest mainland ...
... known species of animal or plants ( witness our recent examples from the work of Sir Emerson Tennent , on Ceylon ) , and yet they have almost always a sort of general family resemblance to the animals and plants of the nearest mainland ...
8 페이지
... known of it . But our knowledge of life is not confined to the existing world . Whatever their minor differences , geologists are agreed as to the vast thickness of the accumulated strata which compose the visible part of our earth ...
... known of it . But our knowledge of life is not confined to the existing world . Whatever their minor differences , geologists are agreed as to the vast thickness of the accumulated strata which compose the visible part of our earth ...
17 페이지
... known ; but one thing is certain , that , if certain breeds of dogs , or of pigeons , or of horses , were known only in a fossil state , no naturalist would hesitate in regarding them as distinct species . But in all these cases we have ...
... known ; but one thing is certain , that , if certain breeds of dogs , or of pigeons , or of horses , were known only in a fossil state , no naturalist would hesitate in regarding them as distinct species . But in all these cases we have ...
28 페이지
... known only by the study of their skins , or bones , or other lifeless exuviæ ; that we are acquainted with none , or next to none , of their physiological peculiarities , beyond those which can be deduced from their structure , or are ...
... known only by the study of their skins , or bones , or other lifeless exuviæ ; that we are acquainted with none , or next to none , of their physiological peculiarities , beyond those which can be deduced from their structure , or are ...
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adapted admit Agamogenesis Ancon animalcules animals and plants appears believe 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 evidence ex nihilo exhibited existence extinct fact favour Flourens geological germ give rise groups horse Hyæna hypothesis inorganic world inquiry kind knowledge Lamarck laws less living Maillet male matter means Mivart modification natural selection naturalists objections observation offspring organic nature organisation Origin of Species ovum parent Paul de Longpré peculiar phenomena philosophical physiological pigeons present primitive stock principles produced Professor 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 variation varieties vegetabilia vegetable Wallace whole