On The Origin Of SpeciesHarper Collins, 22 июл. 2014 г. - Всего страниц: 336 Published in 1859, The Origin of Species by Charles Darwin introduced the theory of natural selection to a newly-receptive public. As a young naturalist on the second voyage of HMS Beagle (1831-36), Darwin collected many plant and animal specimens, and it was his close examination of them that eventually led to his theories on evolution and natural selection. HarperPerennial Classics brings great works of literature to life in digital format, upholding the highest standards in ebook production and celebrating reading in all its forms. Look for more titles in the HarperPerennial Classics collection to build your digital library. |
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... intermediate between their parents; and if we account for our several domestic races bythis process, we mustadmit the former existenceof the most extreme forms, as theItalian greyhound, bloodhound, bull dog, etc.,inthe wild state ...
... intermediate between their parents; and if we account for our several domestic races bythis process, we mustadmit the former existenceof the most extreme forms, as theItalian greyhound, bloodhound, bull dog, etc.,inthe wild state ...
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... intermediate linksin the long lines of descent, yet admit that many of our domestic races are descended from thesame parents—may they not learna lesson of caution, whentheyderide theideaofspecies ina stateof nature beinglineal ...
... intermediate linksin the long lines of descent, yet admit that many of our domestic races are descended from thesame parents—may they not learna lesson of caution, whentheyderide theideaofspecies ina stateof nature beinglineal ...
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... intermediate gradations, it is possible that theywere oncethus connected. Mr. Wallace, forinstance, describesacertain butterflywhich presentsinthesame islanda great range of varieties connected by intermediate links, andthe extreme ...
... intermediate gradations, it is possible that theywere oncethus connected. Mr. Wallace, forinstance, describesacertain butterflywhich presentsinthesame islanda great range of varieties connected by intermediate links, andthe extreme ...
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... intermediate gradations, that naturalists do not like to rank them as distinct species, are in several respects the most important for us. We have everyreason to believethat many of thesedoubtful and closely allied forms have ...
... intermediate gradations, that naturalists do not like to rank them as distinct species, are in several respects the most important for us. We have everyreason to believethat many of thesedoubtful and closely allied forms have ...
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... intermediate links connecting theseveral forms should now be found. The naturalist thus loses his best guide indetermining whether torank doubtful forms as varietiesor species. This likewise necessarily occurs with closely allied ...
... intermediate links connecting theseveral forms should now be found. The naturalist thus loses his best guide indetermining whether torank doubtful forms as varietiesor species. This likewise necessarily occurs with closely allied ...
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according adapted admit advantage allied America amount animals appear become believe belonging birds breeds cause certain characters climate closely color common compared complex considerable considered continued crossed descendants developed difficulty distinct domestic doubt effects existing extinct extremely facts favourable fertility flowers formation forms genera genus geological give given greater groups habits Hence hybrids important increase individuals inhabitants inherited insects instance instincts intermediate inthe islands kind known laws less living look manner means modification namely natural selection naturalists nearly observed occasionally occur offspring ofthe onthe organs parent perfect period plants points present preserved principle probably produced remarked represented resemblance respect seeds seems seen separated shown similar single slight sometimes species stage sterility structure successive suppose theory thesame tothe variability variations varieties various vary whole widely young