On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page viii
... forms of life throughout the world - On the affinities of extinct species to each other and to living species- On the state of development of ancient forms On the succession of the same types within the same areas Summary of preceding ...
... forms of life throughout the world - On the affinities of extinct species to each other and to living species- On the state of development of ancient forms On the succession of the same types within the same areas Summary of preceding ...
Page 20
... forms in some degree intermediate between their parents ; and if we account for our several domestic races by this process , we must admit the former existence of the most extreme forms , as the Italian greyhound , bloodhound , bull ...
... forms in some degree intermediate between their parents ; and if we account for our several domestic races by this process , we must admit the former existence of the most extreme forms , as the Italian greyhound , bloodhound , bull ...
Page 46
... forms to rank as species and which as varieties . We may instance Rubus , Rosa , and Hieracium amongst plants , several genera of insects , and several genera of Brachiopod shells . In most polymorphic genera some of the species have ...
... forms to rank as species and which as varieties . We may instance Rubus , Rosa , and Hieracium amongst plants , several genera of insects , and several genera of Brachiopod shells . In most polymorphic genera some of the species have ...
Page 47
... forms which possess in some considerable degree the character of species , but which are so closely similar to some other forms , or are so closely linked to them by intermediate gradations , that naturalists do not like to rank them as ...
... forms which possess in some considerable degree the character of species , but which are so closely similar to some other forms , or are so closely linked to them by intermediate gradations , that naturalists do not like to rank them as ...
Page 48
... forms , Mr. Babington gives 251 species , whereas Mr. Bentham gives only 112 , -a difference of 139 doubtful forms ! Amongst animals which unite for each birth , and which are highly locomotive , doubtful forms , ranked by one zoologist ...
... forms , Mr. Babington gives 251 species , whereas Mr. Bentham gives only 112 , -a difference of 139 doubtful forms ! Amongst animals which unite for each birth , and which are highly locomotive , doubtful forms , ranked by one zoologist ...
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Common terms and phrases
accumulated adapted affinities allied species America amount analogous ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable Fcap fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ less living male mammals manner Marsupials migration modification modified descendants natural selection naturalists nearly nest oceanic islands offspring organisation perfect pigeons plants pollen present probably produced progenitor racters ranked reciprocal crosses remarked resemble rock-pigeon rudimentary organs seeds sexual selection Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely