The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life, Volume 1 |
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Page v
... Causes of Variability - Effects of Habit and the use or disuse of Parts Correlated Variation Inheritance - Character of Domestic Varieties - Difficulty of distinguishing between Varieties and Species - Origin of domestic varieties from ...
... Causes of Variability - Effects of Habit and the use or disuse of Parts Correlated Variation Inheritance - Character of Domestic Varieties - Difficulty of distinguishing between Varieties and Species - Origin of domestic varieties from ...
Page vi
... caused by Natural Selection - Divergence of Character , related to the diversity of inhabitants of any small area , and to naturalisation - Action of Natural Selection , through divergence of Character and Ex- tinction , on the ...
... caused by Natural Selection - Divergence of Character , related to the diversity of inhabitants of any small area , and to naturalisation - Action of Natural Selection , through divergence of Character and Ex- tinction , on the ...
Page vii
... Causes which interfere with the acquisition through natural selection of useful structures - Gradations of structure with changed functions- Widely different organs in members of the same class , developed from one and the same source ...
... Causes which interfere with the acquisition through natural selection of useful structures - Gradations of structure with changed functions- Widely different organs in members of the same class , developed from one and the same source ...
Page x
... causes which prevent in many cases the acquisition through natural selec- tion of useful structures . Lastly , reasons given for disbelieving in great and sudden modifi- cations . Gradations of character , often accom- panied by changes ...
... causes which prevent in many cases the acquisition through natural selec- tion of useful structures . Lastly , reasons given for disbelieving in great and sudden modifi- cations . Gradations of character , often accom- panied by changes ...
Page xi
... causes of sterility of hybrids , added to and corrected . Page Page vol . ii . 326 377 81 402 107 440 148 463 172 505 516 232 518 236 218 520 237 521 240 541 262 262 275 547 552 568 293 572 Pyrgoma found in the chalk . Extinct forms ...
... causes of sterility of hybrids , added to and corrected . Page Page vol . ii . 326 377 81 402 107 440 148 463 172 505 516 232 518 236 218 520 237 521 240 541 262 262 275 547 552 568 293 572 Pyrgoma found in the chalk . Extinct forms ...
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Common terms and phrases
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 individual differences 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 relation remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens structure struggle supposed swimbladder tend tendency tion transitional tree variability variations varieties vary widely wings young