The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, 1권D. Appleton, 1898 |
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26개의 결과 중 1 - 5개
vi 페이지
... inhabitants of any small area , and to naturalisation - Action of Natural Selection , through Divergence of Character and Extinction , on the descendants from a common parent - Ex- plains the grouping of all organic beings - Advance in ...
... inhabitants of any small area , and to naturalisation - Action of Natural Selection , through Divergence of Character and Extinction , on the descendants from a common parent - Ex- plains the grouping of all organic beings - Advance in ...
xvi 페이지
... the most prevalent , if not the only race , in the particular country in which it had originated . " He then extends these same views to the white inhabitants of colder climates . I am indebted to Mr. Rowley , of. xvi HISTORICAL SKETCH .
... the most prevalent , if not the only race , in the particular country in which it had originated . " He then extends these same views to the white inhabitants of colder climates . I am indebted to Mr. Rowley , of. xvi HISTORICAL SKETCH .
6 페이지
... inhabitant of this world . Still less do we know of the mutual rela- tions of the innumerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure ...
... inhabitant of this world . Still less do we know of the mutual rela- tions of the innumerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure ...
20 페이지
... inhabitants of Switzerland cultivated several kinds of wheat and barley , the pea , the poppy for oil , and flax ; and they possessed several domesticated animals . They also carried on commerce with other nations . All this clearly ...
... inhabitants of Switzerland cultivated several kinds of wheat and barley , the pea , the poppy for oil , and flax ; and they possessed several domesticated animals . They also carried on commerce with other nations . All this clearly ...
47 페이지
... inhabitants of open plains rarely possess more than one breed of the same species . Pigeons can be mated for life , and this is a great convenience to the fancier , for thus many races may be improved and kept true , though mingled in ...
... inhabitants of open plains rarely possess more than one breed of the same species . Pigeons can be mated for life , and this is a great convenience to the fancier , for thus many races may be improved and kept true , though mingled in ...
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adapted advantage allied analogous animals and plants appear Asa Gray beak become bees believe birds breeds caudicle cause cells characters climate closely colour common crossed cuckoo degree descendants developed difficulty distinct species disuse divergence domestic animals domestic races doubt effects eggs existence extinct extremely facts favourable females flowers forms Fritz Müller genera genus giraffe gradations greater number groups habits Hence hermaphrodites hive-bee important increase inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less males manner Melipona Mivart modified natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species parent perfect period pigeons pollen pollen-grains present preserved prey principle probably produced progenitor quadrupeds rank rarely Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion tree variability variations varieties vary widely wings young