The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for Life, Volumes 1-2D. Appleton, 1917 - Evolution |
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Page 137
... descendants of our carnivorous animals become , the more places they will be enabled to occupy . What applies to one animal will apply throughout all time to all animals - that is , if they vary for otherwise natural selection can ...
... descendants of our carnivorous animals become , the more places they will be enabled to occupy . What applies to one animal will apply throughout all time to all animals - that is , if they vary for otherwise natural selection can ...
Page 147
... descendants to this late stage of descent . The new species in our diagram descended from the original eleven species , will now be fifteen in number . Owing to the divergent tendency of natural selection , the extreme amount of ...
... descendants to this late stage of descent . The new species in our diagram descended from the original eleven species , will now be fifteen in number . Owing to the divergent tendency of natural selection , the extreme amount of ...
Page 123
Charles Darwin. though in some degree modified descendants . If the inhabitants of one continent formerly differed greatly from those of another continent , so will their modified descendants still differ in nearly the same manner and ...
Charles Darwin. though in some degree modified descendants . If the inhabitants of one continent formerly differed greatly from those of another continent , so will their modified descendants still differ in nearly the same manner and ...
Contents
VARIATION UNDER DOMESTICATION | 7 |
CHAPTER II | 51 |
STRUGGLE FOR EXISTENCE | 66 |
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Common terms and phrases
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