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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... plant itself. It is, therefore, of the highest importance to gain a clear insight into the means of modification and ... plants would offer the best chance of making outthis obscure problem. Nor have I been disappointed; in this andin ...
... plant itself. It is, therefore, of the highest importance to gain a clear insight into the means of modification and ... plants would offer the best chance of making outthis obscure problem. Nor have I been disappointed; in this andin ...
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... plants and animals, one of the first points which strikes us is, that theygenerally differmorefrom each other than do the individuals of any one species or variety in a state of nature. And if we reflect on the vast diversity of the plants ...
... plants and animals, one of the first points which strikes us is, that theygenerally differmorefrom each other than do the individuals of any one species or variety in a state of nature. And if we reflect on the vast diversity of the plants ...
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... plants display the utmost vigour, and yet rarely or never seed! In some few cases it has been discovered that a very trifling change, such as a littlemoreorless waterat some particular periodof growth, will determine whether ornot ...
... plants display the utmost vigour, and yet rarely or never seed! In some few cases it has been discovered that a very trifling change, such as a littlemoreorless waterat some particular periodof growth, will determine whether ornot ...
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... plants;” as they are called by gardeners; that is, of plants which have suddenly produced a single bud with a new andsometimes widely different character from thatof the otherbuds on the same plant. These bud variations, as they may ...
... plants;” as they are called by gardeners; that is, of plants which have suddenly produced a single bud with a new andsometimes widely different character from thatof the otherbuds on the same plant. These bud variations, as they may ...
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... plants. Fromfacts collectedby Heusinger, it appears that white sheep and pigs are injured by certain plants, while darkcolored individuals escape: Professor Wyman has recently communicated to me agood illustration ofthis fact; on ...
... plants. Fromfacts collectedby Heusinger, it appears that white sheep and pigs are injured by certain plants, while darkcolored individuals escape: Professor Wyman has recently communicated to me agood illustration ofthis fact; on ...
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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