On the Origin of Species by Means of Natural Selection: Or The Preservation of Favored Races in the Struggle for Life, Volume 2 |
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Page v
... ranges 33-47 .. .. CHAPTER III . STRUGGLE FOR EXISTENCE . - Its bearing on natural selection - The term used in a wide sense - Geome trical ratio of increase Rapid increase of naturalised animals and plants Nature of the checks to ...
... ranges 33-47 .. .. CHAPTER III . STRUGGLE FOR EXISTENCE . - Its bearing on natural selection - The term used in a wide sense - Geome trical ratio of increase Rapid increase of naturalised animals and plants Nature of the checks to ...
Page xii
... range of a species of Galaxias , a fresh - water fish . Discussion on analogical resemblances , enlarged and modified . 382 Homological structure of the feet of certain marsupial 518 384 520 385 521 387 541 401 547 405 552 568 409 421 ...
... range of a species of Galaxias , a fresh - water fish . Discussion on analogical resemblances , enlarged and modified . 382 Homological structure of the feet of certain marsupial 518 384 520 385 521 387 541 401 547 405 552 568 409 421 ...
Page 4
... ranges widely and is very numerous , and why another allied species has a narrow range and is rare ? Yet these relations are of the highest importance , for they determine the present welfare , and , as I believe , the future success ...
... ranges widely and is very numerous , and why another allied species has a narrow range and is rare ? Yet these relations are of the highest importance , for they determine the present welfare , and , as I believe , the future success ...
Page 33
... ranges . - BEFORE applying the principles arrived at in the last chapter to organic beings in a state of nature , we must briefly discuss whether these latter are subject to any variation . To treat this subject properly , a long ...
... ranges . - BEFORE applying the principles arrived at in the last chapter to organic beings in a state of nature , we must briefly discuss whether these latter are subject to any variation . To treat this subject properly , a long ...
Page 36
... range of varieties connected by intermediate links , and the extreme links of the chain closely resemble the two forms of an allied dimorphic species inhabiting another part of the Malay archipelago . Thus also with ants , the several ...
... range of varieties connected by intermediate links , and the extreme links of the chain closely resemble the two forms of an allied dimorphic species inhabiting another part of the Malay archipelago . Thus also with ants , the several ...
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Common terms and phrases
adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed tend theory tion variability variations varieties vary whilst whole wings young