The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for Life: Reprinted from the Sixth London Edition, with All Additions and CorrectionsA. L. Burt Company, 1890 - 538페이지 |
도서 본문에서
86개의 결과 중 1 - 3개
127 페이지
... action of natural selection , and how much to the definite action of the conditions of life . Thus , it is well known to furriers that animals of the same species have thicker and better fur the further north they live , but who can ...
... action of natural selection , and how much to the definite action of the conditions of life . Thus , it is well known to furriers that animals of the same species have thicker and better fur the further north they live , but who can ...
243 페이지
... action is performed , but not necessarily of its origin . How unconsciously many habitual actions are performed , indeed not rarely in direct oppo- sition to our conscious will ! yet they may be modified by the will or reason . Habits ...
... action is performed , but not necessarily of its origin . How unconsciously many habitual actions are performed , indeed not rarely in direct oppo- sition to our conscious will ! yet they may be modified by the will or reason . Habits ...
245 페이지
... action for the sole good of another , with which I am acquainted , is that of aphides voluntarily yielding , as was first observed by Huber , their sweet excretion to ants : that they do so voluntarily , the following facts show : I re ...
... action for the sole good of another , with which I am acquainted , is that of aphides voluntarily yielding , as was first observed by Huber , their sweet excretion to ants : that they do so voluntarily , the following facts show : I re ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted admit affinities ALEXANDRE DUMAS allied species America ancient appear 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 Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate intervals kind lamellæ larvæ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest oceanic islands offspring organs paleozoic parent peculiar perfect pigeons pistil pollen present principle probably produced quadrupeds ranked remarked resemblance rudimentary seeds Silurian SIR WALTER SCOTT slight South America stamens sterility structure successive suppose tend theory tion trees variability variations varieties vary whole widely different wings young