The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, 1±ÇD. Appleton & Company, 1889 |
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1 ÆäÀÌÁö
... seen in the latter chapters of this volume , seemed to throw some light on the origin of species - that mystery of mysteries , as it has been called by one of our greatest philosophers . On my return home , it occurred to me , in 1837 ...
... seen in the latter chapters of this volume , seemed to throw some light on the origin of species - that mystery of mysteries , as it has been called by one of our greatest philosophers . On my return home , it occurred to me , in 1837 ...
13 ÆäÀÌÁö
... seen , and will hereafter be briefly discussed . I will here only allude to what may be called correlated variation . Important changes in the embryo or larva will probably entail changes in the mature animal . In monstrosities , the ...
... seen , and will hereafter be briefly discussed . I will here only allude to what may be called correlated variation . Important changes in the embryo or larva will probably entail changes in the mature animal . In monstrosities , the ...
19 ÆäÀÌÁö
... seen that we have no right to expect often to find a generic amount of difference in our domesticated races . In attempting to estimate the amount of structural difference between allied domestic races , we are soon involved in doubt ...
... seen that we have no right to expect often to find a generic amount of difference in our domesticated races . In attempting to estimate the amount of structural difference between allied domestic races , we are soon involved in doubt ...
40 ÆäÀÌÁö
... seen , as I am informed by him , any native dog in Spain like our pointer . By a similar process of selection , and by careful training , English racehorses have come to surpass in fleetness and size the parent Arabs , so that the ...
... seen , as I am informed by him , any native dog in Spain like our pointer . By a similar process of selection , and by careful training , English racehorses have come to surpass in fleetness and size the parent Arabs , so that the ...
42 ÆäÀÌÁö
... seen great surprise expressed in horticultural works at the wonderful skill of gardeners , in having produced such splendid results from such poor materials ; but the art has been simple , and , as far as the final result is concerned ...
... seen great surprise expressed in horticultural works at the wonderful skill of gardeners , in having produced such splendid results from such poor materials ; but the art has been simple , and , as far as the final result is concerned ...
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The Origin of Species by Means of Natural Selection; Or, The ..., 1±Ç Charles Darwin ªÀº ¹ßÃé¹® º¸±â - 1872 |
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adapted advantage allied analogous animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely Cloth colour common crossed cuckoo degree descendants developed difficulty distinct species disuse domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus gradations greater number groups habits Hence hermaphrodites hive-bee important improved inhabitants inherited insects instance instincts intercrossing intermediate kind lamell©¡ large number larger genera larv©¡ less likewise males manner Mivart modified natural selection naturalists nearly nest neuters occasionally offspring organisation organs origin ORIGIN OF SPECIES parent perfect period pigeons pollen pollen-grains present preserved principle probably produced progenitor quadrupeds rank Red Grouse remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens structure struggle sub-breeds supposed swimbladder tend tendency tion transitional tree tumbler pigeon variability variations varieties vary widely wild wings young
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227 ÆäÀÌÁö - If it could be proved that any part of the structure of any one species had been formed for the exclusive good of another species, it would annihilate my theory, for such could not have been produced through natural selection.
203 ÆäÀÌÁö - 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.
75 ÆäÀÌÁö - Several writers have misapprehended or objected to the term Natural Selection, Some have even imagined that natural selection induces variability, whereas it' implies only the. preservation of such variations as arise and are beneficial to the being under its conditions of * life.
xxv ÆäÀÌÁö - As many more individuals of each species are born than can possibly survive ; and as, consequently, there is a frequently recurring straggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be naturally selected.
xix ÆäÀÌÁö - 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.
144 ÆäÀÌÁö - It is well known that several animals, belonging to the most different classes, which inhabit the caves of Carniola and of Kentucky, are blind. In some of the crabs the foot-stalk for the eye remains, though the eye is gone; — the stand for the telescope is there, though the telescope with its glasses has been lost. As it is difficult to imagine that eyes, though useless, could be in any way injurious to animals living in darkness, their loss may be attributed to disuse.
55 ÆäÀÌÁö - Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult — at least I have found it so — than constantly to bear this conclusion in mind.
341 ÆäÀÌÁö - Cloth, $2.00. DIFFERENT FORMS OF FLOWERS ON PLANTS OF THE SAME SPECIES. With Illustrations. 12mo. Cloth, $1.50. THE POWER OF MOVEMENT IN PLANTS. By CHARLES DARWIN, LL. D., FRS, assisted by FRANCIS DARWIN.
140 ÆäÀÌÁö - The limbs divided into great branches, and these into lesser and lesser branches, were themselves once, when the tree was small, budding twigs; and this connection of the former and present buds by ramifying branches may well represent the classification of all extinct and living species in groups subordinate to groups.
140 ÆäÀÌÁö - The affinities of all the beings of the same class have sometimes been represented by a great tree. I believe this simile largely speaks the truth. The green and budding twigs may represent existing species ; and those produced during each former year may represent the long succession of extinct species.