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 238
... families of crustaceans include a few species , possessing an air- breathing apparatus and fitted to live out of the water . In two of these families , which were more especially examined by Müller , and which are nearly related to each ...
... families of crustaceans include a few species , possessing an air- breathing apparatus and fitted to live out of the water . In two of these families , which were more especially examined by Müller , and which are nearly related to each ...
Page 111
... families and families , some of which are supposed to have perished at different periods , and some to have endured to the present day . By looking at the diagram we can see that if many of the extinct forms supposed to be imbedded in ...
... families and families , some of which are supposed to have perished at different periods , and some to have endured to the present day . By looking at the diagram we can see that if many of the extinct forms supposed to be imbedded in ...
Page 204
... families , families , and orders , all under one great class . The grand fact of the natural subordina- tion of organic beings in groups under groups , which , from its familiarity , does not always sufficiently strike us , is in my ...
... families , families , and orders , all under one great class . The grand fact of the natural subordina- tion of organic beings in groups under groups , which , from its familiarity , does not always sufficiently strike us , is in my ...
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