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 66
... vary most . Guided by theoretical considerations , I thought that some interesting results might be obtained in regard to the nature and relations of the species which vary most , by tabulating all the varieties in several well- worked ...
... vary most . Guided by theoretical considerations , I thought that some interesting results might be obtained in regard to the nature and relations of the species which vary most , by tabulating all the varieties in several well- worked ...
Page 113
... varying individual did not actually transmit to its offspring its newly - acquired character , it would undoubtedly ... vary in the same manner has often been so strong that all the individuals of the same species have been similarly ...
... varying individual did not actually transmit to its offspring its newly - acquired character , it would undoubtedly ... vary in the same manner has often been so strong that all the individuals of the same species have been similarly ...
Page 141
... vary in large genera than in small genera ; and the varying species of the large genera present a greater number of varieties . We have , also , seen that the species , which are the commonest and the most widely diffused , vary more ...
... vary in large genera than in small genera ; and the varying species of the large genera present a greater number of varieties . We have , also , seen that the species , which are the commonest and the most widely diffused , vary more ...
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