The Origin of Species by Means of Natural Selection,: Or the Preservation of Favoured Races in the Struggle for LifeJohn Murray, Albemarle Street., 1891 - 432페이지 |
도서 본문에서
84개의 결과 중 1 - 5개
vi 페이지
... THEORY . Difficulties of the theory of descent with modification - Absence or rarity of transitional varieties - Transitions in habits of life - Diversified habits in the same species - Species with habits widely different from those of ...
... THEORY . Difficulties of the theory of descent with modification - Absence or rarity of transitional varieties - Transitions in habits of life - Diversified habits in the same species - Species with habits widely different from those of ...
vii 페이지
... theory of Natural Selection Page 124 CHAPTER VII . MISCELLANEOUS OBJECTIONS TO THE THEORY OF NATURAL SELECTION . Longevity - Modifications not necessarily simultaneous - Modifications ap- parently of no direct service - Progressive ...
... theory of Natural Selection Page 124 CHAPTER VII . MISCELLANEOUS OBJECTIONS TO THE THEORY OF NATURAL SELECTION . Longevity - Modifications not necessarily simultaneous - Modifications ap- parently of no direct service - Progressive ...
ix 페이지
... theory of Natural Selection - Recapitu- lation of the general and special circumstances in its favour - Causes of the general belief in the immutability of species - How far the theory of Natural Selection may be extended - Effects of ...
... theory of Natural Selection - Recapitu- lation of the general and special circumstances in its favour - Causes of the general belief in the immutability of species - How far the theory of Natural Selection may be extended - Effects of ...
xx 페이지
... theory of Natural Selection is promulgated by Mr. Wallace with admirable force and clearness . Von Baer , towards whom all zoologists feel so profound a respect , expressed about the year 1859 ( see Prof. Rudolph Wagner , " Zoologisch ...
... theory of Natural Selection is promulgated by Mr. Wallace with admirable force and clearness . Von Baer , towards whom all zoologists feel so profound a respect , expressed about the year 1859 ( see Prof. Rudolph Wagner , " Zoologisch ...
3 페이지
... theory will be given : namely , first , the difficulties of transitions , or how a simple being or a simple organ can be changed and perfected into a highly developed being or into an elaborately con- structed organ ; secondly , the ...
... theory will be given : namely , first , the difficulties of transitions , or how a simple being or a simple organ can be changed and perfected into a highly developed being or into an elaborately con- structed organ ; secondly , the ...
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 facts 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 occur 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