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 5
... difficulties in accepting the theory will be given : namely , first , the difficulties of transitions , or how a simple being or a simple organ can be changed and perfected into a highly developed being or into an elaborately ...
... difficulties in accepting the theory will be given : namely , first , the difficulties of transitions , or how a simple being or a simple organ can be changed and perfected into a highly developed being or into an elaborately ...
Page 7
... 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 followed , their Effects ...
... 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 followed , their Effects ...
Page 16
... difficulty in proving its truth : we may safely conclude that very many of the most strongly marked domestic varieties could not possibly live in a wild state . In many cases we do no know what 16 [ CHAP . I. VARIATION UNDER DOMESTICATION .
... difficulty in proving its truth : we may safely conclude that very many of the most strongly marked domestic varieties could not possibly live in a wild state . In many cases we do no know what 16 [ CHAP . I. VARIATION UNDER DOMESTICATION .
Page 17
... , and esculent vegetables , for an unlimited number of generations , would be opposed to all experience . 37 VOL . I. Character of Domestic Varieties ; difficulty of dis- tinguishing between CHAP . I. ] VARIATION UNDER DOMESTICATION . 17.
... , and esculent vegetables , for an unlimited number of generations , would be opposed to all experience . 37 VOL . I. Character of Domestic Varieties ; difficulty of dis- tinguishing between CHAP . I. ] VARIATION UNDER DOMESTICATION . 17.
Page 18
... difficulty of dis- tinguishing between Varieties and Species ; origin of Domestic Varieties from one or more Species . When we look to the hereditary varieties or races of our domestic animals and plants , and compare them with closely ...
... difficulty of dis- tinguishing between Varieties and Species ; origin of Domestic Varieties from one or more Species . When we look to the hereditary varieties or races of our domestic animals and plants , and compare them with closely ...
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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