Darwiniana: EssaysD. Appleton, 1896 - 475ÆäÀÌÁö |
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... give rise to varieties infertile with one another , the logical foundation of the theory of natural selection is incomplete . We still remain very much in the dark about the causes of variation ; the apparent inheritance of acquired ...
... give rise to varieties infertile with one another , the logical foundation of the theory of natural selection is incomplete . We still remain very much in the dark about the causes of variation ; the apparent inheritance of acquired ...
12 ÆäÀÌÁö
... give rise to another kind , which would be admitted by naturalists as a distinct species . Lamarck imagined that he had discovered this vera causa in the admitted facts that some organs may be modified by exercise ; and that ...
... give rise to another kind , which would be admitted by naturalists as a distinct species . Lamarck imagined that he had discovered this vera causa in the admitted facts that some organs may be modified by exercise ; and that ...
19 ÆäÀÌÁö
... give rise to a more competent variety ( C ) , this will take its place and become a new species ; and thus , by natural selection , the species B and C will be suc- cessively derived from A. That this most ingenious hypothesis enables ...
... give rise to a more competent variety ( C ) , this will take its place and become a new species ; and thus , by natural selection , the species B and C will be suc- cessively derived from A. That this most ingenious hypothesis enables ...
36 ÆäÀÌÁö
... give rise to the metamorphosis of stamens into petals , and so forth . But however they may have arisen , what especially interests us at present is , to remark that , once in existence , many varieties obey 36 II THE ORIGIN OF SPECIES.
... give rise to the metamorphosis of stamens into petals , and so forth . But however they may have arisen , what especially interests us at present is , to remark that , once in existence , many varieties obey 36 II THE ORIGIN OF SPECIES.
37 ÆäÀÌÁö
... gives it what one may call an unfair advantage over the normal descendants from the same stock . This is strik- ingly exemplified by the case of Gratio Kelleia , who married a woman with the ordinary penta- dactyle extremities , and had ...
... gives it what one may call an unfair advantage over the normal descendants from the same stock . This is strik- ingly exemplified by the case of Gratio Kelleia , who married a woman with the ordinary penta- dactyle extremities , and had ...
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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 Hy©¡na 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
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275 ÆäÀÌÁö - 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 ÆäÀÌÁö - 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 ÆäÀÌÁö - 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 ÆäÀÌÁö - History warns us, however, that it is the customary fate of new truths to begin as heresies and to end as superstitions...
112 ÆäÀÌÁö - 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 ÆäÀÌÁö - 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 ÆäÀÌÁö - ... 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 ÆäÀÌÁö - 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 ÆäÀÌÁö - 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 ÆäÀÌÁö - 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.