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 27
... Hence the supposed aboriginal stocks must either still exist in the countries where they were originally domesticated , and yet be unknown to ornithologists ; and this , considering their size , habits , and remarkable characters ...
... Hence the supposed aboriginal stocks must either still exist in the countries where they were originally domesticated , and yet be unknown to ornithologists ; and this , considering their size , habits , and remarkable characters ...
Page 130
... Hence , we can understand how it is that the flora of Madeira , according to Oswald Heer , resembles to a certain extent the extinct tertiary flora of Europe . All fresh - water basins , taken together , make a small area compared with ...
... Hence , we can understand how it is that the flora of Madeira , according to Oswald Heer , resembles to a certain extent the extinct tertiary flora of Europe . All fresh - water basins , taken together , make a small area compared with ...
Page 338
... Hence , I will give the observations which I made in some little detail . I opened fourteen nests of F. sanguinea , and found a few slaves in all . Males and fertile females of the slave species ( F. fusca ) are found only in their own ...
... Hence , I will give the observations which I made in some little detail . I opened fourteen nests of F. sanguinea , and found a few slaves in all . Males and fertile females of the slave species ( F. fusca ) are found only in their own ...
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