The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for Life, 1-2권D. Appleton, 1917 |
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... laws of growth and variation . Hence , in fact , the law of the Conditions of Existence is the higher law ; as it includes , through the inheritance of former variations and adaptations , that of Unity of Type . CHAPTER VII ...
... laws of growth and variation . Hence , in fact , the law of the Conditions of Existence is the higher law ; as it includes , through the inheritance of former variations and adaptations , that of Unity of Type . CHAPTER VII ...
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... law in this author's restorations of the extinct and gigantic birds of New Zealand . We see it also in the birds of the caves of Brazil . Mr. Woodward has shown that the same law holds good with sea - shells , but , from the wide ...
... law in this author's restorations of the extinct and gigantic birds of New Zealand . We see it also in the birds of the caves of Brazil . Mr. Woodward has shown that the same law holds good with sea - shells , but , from the wide ...
122 페이지
... law that marsupials should have been chiefly or solely produced in Australia ; or that Edentata and other American types should have been solely produced in South America . For we know that Europe in ancient times was peopled by ...
... law that marsupials should have been chiefly or solely produced in Australia ; or that Edentata and other American types should have been solely produced in South America . For we know that Europe in ancient times was peopled by ...
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adapted affinity allied species ancient animals appear Archipelago beak become believe belonging birds breeds Cambrian cause characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt eggs embryo Europe existing extinct extremely facts favourable fertilised fertility fish flowers formation formerly forms fossil Fritz Müller Gärtner genera genus geological geological period Glacial period gradations groups of species habits Hence hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly occur oceanic islands offspring organisation parent peculiar perfect pigeon pistil plants pollen present probably produced progenitor quadrupeds ranked reciprocal crosses remarked resemblance seeds Silurian slight South America stage stamens sterility structure successive suppose theory tion variability variations varieties vary whilst whole widely different wings