On the Origin of the Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJohn Murray, 1869 - 596페이지 |
도서 본문에서
81개의 결과 중 1 - 5개
8 페이지
... had some efficient cause ; and if the same cause were to act uniformly during a long series of generations on many individuals , all probably would be modified in the same manner . Such facts as the complex and 8 .CHAP . I. VARIATION.
... had some efficient cause ; and if the same cause were to act uniformly during a long series of generations on many individuals , all probably would be modified in the same manner . Such facts as the complex and 8 .CHAP . I. VARIATION.
9 페이지
... probably played a more important part in the formation of our domestic races . We see indefinite variability in the endless slight peculiarities which distinguish the individuals of the same species , and which cannot be accounted for ...
... probably played a more important part in the formation of our domestic races . We see indefinite variability in the endless slight peculiarities which distinguish the individuals of the same species , and which cannot be accounted for ...
12 페이지
... probably another instance of the effects of use . Not one of our domestic animals can be named which has not in some country drooping ears ; and the view which has been suggested that the drooping is due to the disuse of the muscles of ...
... probably another instance of the effects of use . Not one of our domestic animals can be named which has not in some country drooping ears ; and the view which has been suggested that the drooping is due to the disuse of the muscles of ...
32 페이지
... probably arisen suddenly , or by one step ; many botan- ists , for instance , believe that the fuller's teasel , with its hooks , which cannot be rivalled by any mechanical contrivance , is only a variety of the wild Dipsacus ; and this ...
... probably arisen suddenly , or by one step ; many botan- ists , for instance , believe that the fuller's teasel , with its hooks , which cannot be rivalled by any mechanical contrivance , is only a variety of the wild Dipsacus ; and this ...
33 페이지
... probably better acquainted with the works of agriculturists than almost any other individual , and who was himself a very good judge of an animal , speaks of the principle of selection as " that which enables the agriculturist , not ...
... probably better acquainted with the works of agriculturists than almost any other individual , and who was himself a very good judge of an animal , speaks of the principle of selection as " that which enables the agriculturist , not ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
accumulated adapted affinities allied species America ancient appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt Edition eggs embryo existing exterminated extinct extremely facts favourable females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ less living males mammals manner migration modified descendants natural selection naturalists nearly nest occur oceanic islands offspring organisation parent perfect pigeons pistil pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble seeds sexual sexual selection Silurian slight South America stamens sterility structure struggle successive suppose theory tion variability variations varieties vary vols whole widely