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 10
... living species - On the state of development of ancient forms- On the succession of the same types within the same areas— Summary of preceding and present chapter .. 272 CHAPTER XI GEOGRAPHICAL DISTRIBUTION Present distribution cannot ...
... living species - On the state of development of ancient forms- On the succession of the same types within the same areas— Summary of preceding and present chapter .. 272 CHAPTER XI GEOGRAPHICAL DISTRIBUTION Present distribution cannot ...
Page 20
... living long under not very close con- finement in their native country ! This is generally attributed to vitiated instincts ; but how many cultivated plants display the utmost vigour , and yet rarely or never seed ! In some few such ...
... living long under not very close con- finement in their native country ! This is generally attributed to vitiated instincts ; but how many cultivated plants display the utmost vigour , and yet rarely or never seed ! In some few such ...
Page 23
... living . " Hairless dogs have imperfect teeth : long - haired and coarse - haired animals are apt to have , as is asserted , long or many horns ; pigeons with feathered feet have skin between their outer toes ; pigeons with short beaks ...
... living . " Hairless dogs have imperfect teeth : long - haired and coarse - haired animals are apt to have , as is asserted , long or many horns ; pigeons with feathered feet have skin between their outer toes ; pigeons with short beaks ...
Page 58
... living under widely different conditions of life . Such a plant is not the less dominant in the sense here used , because some conferva inhabiting the water or some parasitic fungus is infinitely more numerous in individuals and more ...
... living under widely different conditions of life . Such a plant is not the less dominant in the sense here used , because some conferva inhabiting the water or some parasitic fungus is infinitely more numerous in individuals and more ...
Page 90
... living and leaving descendants . Its descendants would probably inherit a tendency to a similar slight deviation of structure . The tubes of the corollas of the common red and incarnate clovers ( Trifolium pratense and incar- natum ) do ...
... living and leaving descendants . Its descendants would probably inherit a tendency to a similar slight deviation of structure . The tubes of the corollas of the common red and incarnate clovers ( Trifolium pratense and incar- natum ) do ...
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Common terms and phrases
accumulated adapted affinities allied species America analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic existing exterminated extinct extremely facts favourable fertilised fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ laws less living males mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally offspring organic organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rock-pigeon rudimentary seeds sexual sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory variability variations varieties vary whole widely