On the Origin of Species by Means of Natural Selection: Or The Preservation of Favoured Races in the Struggle for Life |
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v 페이지
A few naturalists, and several who have not particularly studied natural history,
believe, on the other hand, that species undergo modification, and that the
existing forms of life have descended by true generation from pre-existing forms.
A few naturalists, and several who have not particularly studied natural history,
believe, on the other hand, that species undergo modification, and that the
existing forms of life have descended by true generation from pre-existing forms.
22 페이지
When we attempt to estimate the amount of structural difference between the
domestic races of the same species, we are soon involved in doubt, from not
knowing whether they have descended from one or several parent-species. This
point, if ...
When we attempt to estimate the amount of structural difference between the
domestic races of the same species, we are soon involved in doubt, from not
knowing whether they have descended from one or several parent-species. This
point, if ...
23 페이지
In the case of most of our anciently domesticated animals and plants, I do not
think it is possible to come to any definite conclusion, whether they have
descended from one or several species. The argument mainly relied on by those
who ...
In the case of most of our anciently domesticated animals and plants, I do not
think it is possible to come to any definite conclusion, whether they have
descended from one or several species. The argument mainly relied on by those
who ...
24 페이지
In regard to sheep and goats I can form no opinion, I should think, from facts
communicated to me by Mr. Blyth, on the habits, voice, and constitution, &c, of the
humped Indian cattle, that these had descended from a different aboriginal stock
...
In regard to sheep and goats I can form no opinion, I should think, from facts
communicated to me by Mr. Blyth, on the habits, voice, and constitution, &c, of the
humped Indian cattle, that these had descended from a different aboriginal stock
...
27 페이지
Great as the differences are between the breeds of pigeons, I am fully convinced
that the common opinion of naturalists is correct, namely, that all have descended
from the rock-pigeon (Columba livia), including under this term several ...
Great as the differences are between the breeds of pigeons, I am fully convinced
that the common opinion of naturalists is correct, namely, that all have descended
from the rock-pigeon (Columba livia), including under this term several ...
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자주 나오는 단어 및 구문
action adapted advantage allied America amount ancient animals appear become believe birds breeds cause chapter characters climate closely common compared considered continuous crossed descended developed difficulty distinct domestic doubt effects existing explained extinct extremely facts families favourable fertility flowers follow formations forms genera genus geological give given greater groups habits hand Hence hybrids important improved increase individuals inhabitants inherited insects instance instincts intermediate islands kinds known land laws less lines living look male manner means modification namely natural selection naturalists nearly never occur offspring organic origin parent perfect period plants points present principle probably produced range ranked reason remarked seeds seems seen separated single slight sometimes species sterility structure struggle successive suppose tend theory tion variability variation varieties vary whole widely
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423 페이지 - It is interesting to contemplate a tangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other and dependent upon each other in so complex a manner, have all been produced by laws acting around us.
422 페이지 - In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history.
423 페이지 - Variability from the indirect and direct action of the conditions of life, and from use and disuse; a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection, entailing Divergence of Character and the Extinction of less-improved forms. Thus, from the war of nature, from famine and death, the most exalted object which we are capable of conceiving, namely, the production of higher animals, directly follows.
9 페이지 - On my return home, it occurred to me, in 1837, that something might perhaps be made out on this question by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing on it. After five years' work I allowed myself to speculate on the subject, and drew up some short notes ; these I enlarged in 1844 into a sketch of the conclusions which then seemed to me probable : from that period to the present day I have steadily pursued the same object. I hope that I may...
423 페이지 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
61 페이지 - I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection, in order to mark its relation to man's power of selection.
72 페이지 - Near villages and small towns I have found the nests of humble-bees more numerous than elsewhere, which I attribute to the number of cats that destroy the mice.
169 페이지 - If it could be demonstrated that any complex organ existed, which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down.
420 페이지 - Our classifications will come to be, as far as they can be so made, genealogies ; and will then truly give what may be called the plan of creation.
11 페이지 - ... species had not been independently created, but had descended, like varieties, from other species. Nevertheless, such a conclusion, even if well founded, would be unsatisfactory, until it could be shown how the innumerable species inhabiting this world have been modified, so as to acquire that perfection of structure and coadaptation which most justly excites our admiration.
도서 문헌정보
| 제목 | On the Origin of Species by Means of Natural Selection: Or The Preservation of Favoured Races in the Struggle for Life |
| 저자 | Charles Darwin |
| 출판 | 1870 |
| 소장 | 하버드 대학교 |
| 디지털화된 날짜: | 2008년 3월 19일 |
| 길이 | 440페이지 |
| 서지정보 내보내기 | BiBTeX EndNote RefMan |