The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life, Том 1John Murray, 1888 - Всего страниц: 458 |
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Стр. v
... Character of Domestic Varieties - Difficulty of distinguishing between Varieties and Species - Origin of domestic varieties from one or more species - Domestic Pigeons , their Differences and Origin— Principles of Selection , anciently ...
... Character of Domestic Varieties - Difficulty of distinguishing between Varieties and Species - Origin of domestic varieties from one or more species - Domestic Pigeons , their Differences and Origin— Principles of Selection , anciently ...
Стр. vi
... characters of trifling importance — its power at all ages and on both sexes - Sexual selection - On the generality ... Character , related to the diversity of inhabitants of any small area , and to naturalisation - Action of Natural ...
... characters of trifling importance — its power at all ages and on both sexes - Sexual selection - On the generality ... Character , related to the diversity of inhabitants of any small area , and to naturalisation - Action of Natural ...
Стр. vii
... characters more variable than generic secondary sexual characters variable - Species of the same genus vary in an analogous manner - Reversions to long - lost characters - Summary .. .. .. Page 164 CHAPTER VI . DIFFICULTIES OF THE ...
... characters more variable than generic secondary sexual characters variable - Species of the same genus vary in an analogous manner - Reversions to long - lost characters - Summary .. .. .. Page 164 CHAPTER VI . DIFFICULTIES OF THE ...
Стр. xvi
... characters alone . After remarking that negroes and mulattoes enjoy an immunity from certain tropical diseases , he observes , firstly , that all animals tend to vary in some degree , and , secondly , that agri- culturists improve their ...
... characters alone . After remarking that negroes and mulattoes enjoy an immunity from certain tropical diseases , he observes , firstly , that all animals tend to vary in some degree , and , secondly , that agri- culturists improve their ...
Стр. xviii
... characters ; " but farther on ( p . 18 ) he adds , " except the original types or ancestors of the genus . " In 1843-44 Professor Haldeman ( ' Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the ...
... characters ; " but farther on ( p . 18 ) he adds , " except the original types or ancestors of the genus . " In 1843-44 Professor Haldeman ( ' Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the ...
Другие издания - Просмотреть все
The Origin of Species by Means of Natural Selection: Or, The ..., Том 1 Charles Darwin Полный просмотр - 1889 |
The Origin of Species by Means of Natural Selection: Or, the ..., Том 1 Charles Darwin Полный просмотр - 1898 |
Часто встречающиеся слова и выражения
acquired 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 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 improved increase in number inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less likewise males manner Melipona Mivart natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species perfect period pigeons pollen pollen-grains present preserved principle probably produced progenitor quadrupeds rank Red Grouse remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency theory tion transitional tree variability variations varieties vary widely wings young