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
... 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 followed , their ...
... 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 followed , their ...
Page xvi
... varieties of mankind , fitted for the country which they inhabit . Of the accidental varieties of man , which would occur among the first few and scattered inhabi- tants of the middle regions of Africa , some one would be better fitted ...
... varieties of mankind , fitted for the country which they inhabit . Of the accidental varieties of man , which would occur among the first few and scattered inhabi- tants of the middle regions of Africa , some one would be better fitted ...
Page xvii
... varieties . " He extends the same view to animals . The Dean believes that single species of each genus were created in an originally feet , highly plastic condition , and that these have produced , chiefly by intercrossing , but ...
... varieties . " He extends the same view to animals . The Dean believes that single species of each genus were created in an originally feet , highly plastic condition , and that these have produced , chiefly by intercrossing , but ...
Page xviii
... varieties once , and many varieties are gradually becoming species by assuming constant and peculiar characters ; " but farther on ( p . 18 ) he adds , " except the original types or ancestors of the genus . " In 1843-44 Professor ...
... varieties once , and many varieties are gradually becoming species by assuming constant and peculiar characters ; " but farther on ( p . 18 ) he adds , " except the original types or ancestors of the genus . " In 1843-44 Professor ...
Page xxiii
... varieties , and from the principle of general gradation , that species have been modified ; and he attributes the modification to the change of circumstances . The author ( 1855 ) has also treated Psychology on the principle of the ...
... varieties , and from the principle of general gradation , that species have been modified ; and he attributes the modification to the change of circumstances . The author ( 1855 ) has also treated Psychology on the principle of the ...
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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