The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJohn Murray, 1895 - 432페이지 |
도서 본문에서
80개의 결과 중 1 - 5개
xv 페이지
... doubt that Goethe was an extreme partisan of similar views , as shown in the Intro- 6 ction to a work written in 1794 and 1795 , but not published till ng afterwards : he has pointedly remarked ( Goethe als Natur- forscher , ' von Dr ...
... doubt that Goethe was an extreme partisan of similar views , as shown in the Intro- 6 ction to a work written in 1794 and 1795 , but not published till ng afterwards : he has pointedly remarked ( Goethe als Natur- forscher , ' von Dr ...
xxi 페이지
... doubt the type - form , " & c . ( Ibid . vol . i . p . xxxv . ) , that Professor Owen admitted that natural selection may have done something in the formation of a new species ; but this it appears ( Ibid . vol . iii . p . 798 ) is ...
... doubt the type - form , " & c . ( Ibid . vol . i . p . xxxv . ) , that Professor Owen admitted that natural selection may have done something in the formation of a new species ; but this it appears ( Ibid . vol . iii . p . 798 ) is ...
2 페이지
... doubt errors will have crept in , though I hope I have always been cautious in trusting to good authorities . alone . I can here give only the general conclusions . at which I have arrived , with a few facts in illustration , but which ...
... doubt errors will have crept in , though I hope I have always been cautious in trusting to good authorities . alone . I can here give only the general conclusions . at which I have arrived , with a few facts in illustration , but which ...
6 페이지
... doubt , after the most deliberate study and dispassionate judgment of which I am capable , that the view which most naturalists until recently enter- tained , and which I formerly entertained - namely , that each species has been ...
... doubt , after the most deliberate study and dispassionate judgment of which I am capable , that the view which most naturalists until recently enter- tained , and which I formerly entertained - namely , that each species has been ...
8 페이지
... same manner . It is extremely difficult to come to any conclusion in regard to the extent of the changes which have been thus definitely induced . There can , however , be little doubt 8 VARIATION UNDER DOMESTICATION . [ CHAP . L.
... same manner . It is extremely difficult to come to any conclusion in regard to the extent of the changes which have been thus definitely induced . There can , however , be little doubt 8 VARIATION UNDER DOMESTICATION . [ CHAP . L.
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continent crossed crustaceans degree developed difficulty distinct species domestic doubt eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed theory tion trees variability variations varieties vary whilst whole wings young