The Origin of Species by Means of Natural Selection; Or, the Preservation of Favored Races in the Struggle for Life ...A.L. Burt, 1890 - 538페이지 |
도서 본문에서
57개의 결과 중 1 - 3개
368 페이지
... America , under the same latitude , would attempt to account , on the one hand through dissimilar physical conditions , for the dissimilarity of the inhabitants of these two continents ; and , on the other hand through similarity of ...
... America , under the same latitude , would attempt to account , on the one hand through dissimilar physical conditions , for the dissimilarity of the inhabitants of these two continents ; and , on the other hand through similarity of ...
374 페이지
... America , between latitudes 25 and 35 degrees , we shall find parts extremely similar in all their conditions , yet it would not be possible to point out three faunas and floras more utterly dissimilar . Or , again , we may compare the ...
... America , between latitudes 25 and 35 degrees , we shall find parts extremely similar in all their conditions , yet it would not be possible to point out three faunas and floras more utterly dissimilar . Or , again , we may compare the ...
418 페이지
... America ? There is nothing in the conditions of life , in the geological nature of the islands , in their height or climate , or in the proportions in which the several classes are associated together , which closely resembles the ...
... America ? There is nothing in the conditions of life , in the geological nature of the islands , in their height or climate , or in the proportions in which the several classes are associated together , which closely resembles the ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted admit affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied color continued crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favorable females fertility flowers formation forms fossil Fritz Müller genera genus geological geological period gilt top Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important 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 oceanic islands offspring organs parent peculiar perfect pigeons pistil pollen present principle probably produced quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive suppose tend theory tion variability variations varieties vary whole widely different wings young