The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for LifeJ. Murray, 1920 - 432페이지 |
도서 본문에서
100개의 결과 중 1 - 5개
vi 페이지
... genus - The relation of organism to organism the most important of all relations .. .. .. Page 44 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF THE FITTEST . Natural Selection - its power compared with man's selection - its power ...
... genus - The relation of organism to organism the most important of all relations .. .. .. Page 44 CHAPTER IV . NATURAL SELECTION ; OR THE SURVIVAL OF THE FITTEST . Natural Selection - its power compared with man's selection - its power ...
xv 페이지
... genus were created in an originally bighly plastic condition , and that these have produced , chiefly by intercrossing , but likewise by variation , all our existing species . In 1826 Professor Grant , in the concluding paragraph in his ...
... genus were created in an originally bighly plastic condition , and that these have produced , chiefly by intercrossing , but likewise by variation , all our existing species . In 1826 Professor Grant , in the concluding paragraph in his ...
xvi 페이지
... genus . ' " " In 1843-44 Professor Haldeman ( ' Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the arguments for and against the hypothesis of the development and modification of species : he seems to ...
... genus . ' " " In 1843-44 Professor Haldeman ( ' Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the arguments for and against the hypothesis of the development and modification of species : he seems to ...
11 페이지
... genus , in several trifling respects , they often differ in an extreme degree in some one part , both when compared one with another , and more especially when compared with the species under nature to which they are nearest allied ...
... genus , in several trifling respects , they often differ in an extreme degree in some one part , both when compared one with another , and more especially when compared with the species under nature to which they are nearest allied ...
16 페이지
... genus ; more especially as in each of these breeds several truly - inherited sub - breeds , or species , as he would call them , could be shown him . Great as are the differences between the breeds of the pigeon , I am fully convinced ...
... genus ; more especially as in each of these breeds several truly - inherited sub - breeds , or species , as he would call them , could be shown him . Great as are the differences between the breeds of the pigeon , I am fully convinced ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
accumulated adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species domestic animals doubt effects eggs embryo existing extinct extremely fact favourable female fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids 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 tend theory tion variability variations varieties vary whilst whole wings young