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
... 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 on characters of trifling importance - its power at ...
... 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 on characters of trifling importance - its power at ...
xi 페이지
... important corrections and some additions in the present volume are tabu- lated below , for the convenience of those interested in the sub- ject , and who possess the fifth edition . The second edition was little more than a reprint of ...
... important corrections and some additions in the present volume are tabu- lated below , for the convenience of those interested in the sub- ject , and who possess the fifth edition . The second edition was little more than a reprint of ...
3 페이지
... important , we shall see how great is the power of man in accumulating by his Selection succes- sive slight variations . I will then pass on to the variability of species in a state of nature ; but I shall , unfortunately , be com ...
... important , we shall see how great is the power of man in accumulating by his Selection succes- sive slight variations . I will then pass on to the variability of species in a state of nature ; but I shall , unfortunately , be com ...
4 페이지
... importance , for they determine the present welfare , and , as I believe , the future success and modification of every ... important but not the exclusive , means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of ...
... importance , for they determine the present welfare , and , as I believe , the future success and modification of every ... important but not the exclusive , means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of ...
6 페이지
... important ; for nearly similar variations sometimes arise under , as far as we can judge , dissimilar conditions ; and , on the other hand , dissimilar variations arise under conditions which appear to be nearly uniform . The effects on ...
... important ; for nearly similar variations sometimes arise under , as far as we can judge , dissimilar conditions ; and , on the other hand , dissimilar variations arise under conditions which appear to be nearly uniform . The effects on ...
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