Darwiniana: EssaysD. Appleton, 1896 - 475페이지 |
도서 본문에서
37개의 결과 중 1 - 5개
43 페이지
... action of changes in what are commonly called external circumstances , upon the wild rock - pigeon . On the contrary , from time immemorial pigeon - fanciers have had essentially similar methods of treating their pets , which have been ...
... action of changes in what are commonly called external circumstances , upon the wild rock - pigeon . On the contrary , from time immemorial pigeon - fanciers have had essentially similar methods of treating their pets , which have been ...
67 페이지
... action , atrophied by inaction ; it is another physiological fact that modifications produced are transmissible to offspring . Change the actions of an animal , therefore , and you will change its structure , by increasing the ...
... action , atrophied by inaction ; it is another physiological fact that modifications produced are transmissible to offspring . Change the actions of an animal , therefore , and you will change its structure , by increasing the ...
71 페이지
... action which he performs in artificial selection . The evidence brought forward by Mr. Darwin in support of his hypothesis is of three kinds . First , he endeavours to prove that species may be originated by 34 II 71 THE ORIGIN OF SPECIES.
... action which he performs in artificial selection . The evidence brought forward by Mr. Darwin in support of his hypothesis is of three kinds . First , he endeavours to prove that species may be originated by 34 II 71 THE ORIGIN OF SPECIES.
87 페이지
... action of physical conditions ) may be viewed either as having been of special use to some ancestral form , or as being now of special use to the descendants of this form - either directly , or indirectly , through the complex laws of ...
... action of physical conditions ) may be viewed either as having been of special use to some ancestral form , or as being now of special use to the descendants of this form - either directly , or indirectly , through the complex laws of ...
102 페이지
... action , all the grains of sand below a certain size , and have heaped them by themselves over a great area . This sand has been " unconsciously selected " from amidst the gravel in which it first lay with as 102 CRITICISMS ON " THE ...
... action , all the grains of sand below a certain size , and have heaped them by themselves over a great area . This sand has been " unconsciously selected " from amidst the gravel in which it first lay with as 102 CRITICISMS ON " THE ...
기타 출판본 - 모두 보기
자주 나오는 단어 및 구문
adapted admit Agamogenesis Ancon animalcules animals animals and plants appears believe biological birds body called causes character Charles Darwin course creation Crustacea Darwin Darwin's views Darwinian deposited direct doctrine of evolution domestic pigeons doubt Dysteleology endeavour epigenesis epoch Erasmus Darwin evidence ex nihilo exhibited existence extinct fact favour Flourens geological germ give rise groups horse Hyæna hypothesis inorganic world inquiry kind knowledge Lamarck laws lectures less living Maillet male matter means ment Mivart modification natural selection naturalists objections observation offspring organic nature organisation Origin of Species ovum parent peculiar phenomena philosophical physiological pigeons Pikermi present primitive stock produced Quarterly Reviewer question races reason remarkable result scientific selective breeding sensations sense special creation speculations spontaneous structure Suarez substantial forms suppose Teleology tendency theory thing tion toes variation varieties vegetabilia vegetable Wallace whole
인기 인용구
275 페이지 - In July opened first note-book on Transmutation of Species. Had been greatly struck from about the month of previous March on character of South American fossils, and species on Galapagos Archipelago. These facts (especially latter), origin of all my views."] 1836-1837.
262 페이지 - s lectures on Geology and Zoology, but they were incredibly dull The sole effect they produced on me was the determination never as long as I lived to read a book on Geology, or in any way to study the science.
279 페이지 - I soon perceived that selection was the keystone of man's success in making useful races of animals and plants. But how selection could be applied to organisms living in a state of nature remained for some time a mystery to me.
229 페이지 - History warns us, however, that it is the customary fate of new truths to begin as heresies and to end as superstitions...
112 페이지 - The teleological and the mechanical views of nature are not, necessarily, mutually exclusive. On the contrary, the more purely a mechanist the speculator is, the more firmly does he assume a primordial molecular arrangement of which all the phenomena of the universe...
162 페이지 - And if so, it must be true, in the same sense and to the same extent, that the thoughts to which I am now giving utterance, and your thoughts regarding them, are the expression of molecular changes in that matter of life which is the source of our other vital phenomena.
25 페이지 - ... maps and in museums, but by long voyages and laborious collection; having largely advanced each of these branches of science, and having spent many years in gathering and sifting materials for his present work; the store of accurately-registered facts upon which the author of the 'Origin of Species' is able to draw at will, is prodigious.
223 페이지 - natural selection " suffices for the production of species remains to be seen. Few can doubt that, if not the whole cause, it is a very important factor in that operation ; and that it must play a great part in the sorting out of varieties into those which are transitory and those which are permanent.
247 페이지 - The hour of departure has arrived, and we go our ways — I to die, and you to live. Which is better, God only knows.
255 페이지 - Lamarck and his views on evolution. I listened in silent astonishment, and as far as I can judge without any effect on my mind. I had previously read the Zoonomia of my grandfather, in which similar views are maintained, but without producing any effect on me. Nevertheless it is probable that the hearing rather early in life such views maintained and praised may have favoured my upholding them under a different form in my Origin of Species.