The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
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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 xviii
... varieties slowly become changed into permanent species , which are no longer capable of intercrossing . 6 Rafinesque , in his New Flora of North America , ' published in 1836 , wrote ( p . 6 ) as follows : - " All species might have ...
... varieties slowly become changed into permanent species , which are no longer capable of intercrossing . 6 Rafinesque , in his New Flora of North America , ' published in 1836 , wrote ( p . 6 ) as follows : - " All species might have ...
Page 6
... varieties , if he make due allowance for our profound . ignorance in regard to the mutual relations of the many beings which live around us . Who can explain why one species ranges widely and is very numerous , and why another allied ...
... varieties , if he make due allowance for our profound . ignorance in regard to the mutual relations of the many beings which live around us . Who can explain why one species ranges widely and is very numerous , and why another allied ...
Page 7
... 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 ...
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Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellę larvę less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young