The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for LifeA.L. Burt, 1899 - 538 páginas |
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Página 17
... peculiar to Great Britain ! When we bear in mind that Britain has now not one peculiar mammal , and France but few distinct from those of Germany , and so with Hungary , Spain , etc. , but that each of these kingdoms possesses sev- eral ...
... peculiar to Great Britain ! When we bear in mind that Britain has now not one peculiar mammal , and France but few distinct from those of Germany , and so with Hungary , Spain , etc. , but that each of these kingdoms possesses sev- eral ...
Página 411
... peculiar , whereas of the eleven marine birds only two are peculiar ; and it is obvious that marine birds could arrive at these islands much more easily and frequently than land birds . Ber- muda , on the other hand , which lies at ...
... peculiar , whereas of the eleven marine birds only two are peculiar ; and it is obvious that marine birds could arrive at these islands much more easily and frequently than land birds . Ber- muda , on the other hand , which lies at ...
Página 510
... peculiar form of Greenstone . DORSAL . - Of or belonging to the back . EDENTATA . - A peculiar order of Quadrupeds , characterized by the absence of at least the middle incisor ( front ) teeth in both jaws . ( Examples , the Sloths and ...
... peculiar form of Greenstone . DORSAL . - Of or belonging to the back . EDENTATA . - A peculiar order of Quadrupeds , characterized by the absence of at least the middle incisor ( front ) teeth in both jaws . ( Examples , the Sloths and ...
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Términos y frases comunes
adapted admit affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied color continued crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favorable females fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate intervals kind lamellæ larvæ less living male mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring organs parent peculiar perfect pigeons pistil pollen present principle probably produced quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive suppose tend theory tion variability variations varieties vary whole widely different wings young