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 27
... breeds of the dog has been produced under domestication ; I believe that some small part of the difference is due to their having descended from distinct species . ] In the case of some other domesticated species , there is presumptive ...
... breeds of the dog has been produced under domestication ; I believe that some small part of the difference is due to their having descended from distinct species . ] In the case of some other domesticated species , there is presumptive ...
Page 28
... breeds of poultry have proceeded from the common wild Indian fowl ( Gallus bankiva ) . In regard to ducks and rabbits , the breeds of which differ considerably from each other in structure , the evidence preponderates in favour of their ...
... breeds of poultry have proceeded from the common wild Indian fowl ( Gallus bankiva ) . In regard to ducks and rabbits , the breeds of which differ considerably from each other in structure , the evidence preponderates in favour of their ...
Page 29
... breeds of cattle , sheep , & c . , we must admit that many domestic breeds have originated in Europe ; for whence could they have been derived , as these several countries do not possess a number of peculiar species as distinct parent ...
... breeds of cattle , sheep , & c . , we must admit that many domestic breeds have originated in Europe ; for whence could they have been derived , as these several countries do not possess a number of peculiar species as distinct parent ...
Page 30
... breeds is something astonishing . Compare the English carrier and the short - faced tumbler , and see the wonderful difference in their beaks , entailing corresponding differences in their skulls . The carrier , more especially the male ...
... breeds is something astonishing . Compare the English carrier and the short - faced tumbler , and see the wonderful difference in their beaks , entailing corresponding differences in their skulls . The carrier , more especially the male ...
Page 31
... breeds might be specified . In the skeletons of the several breeds , the develop- ment of the bones of the face in length and breadth and curvature differs enormously . The shape , as well as the breadth and length of the ramus of the ...
... breeds might be specified . In the skeletons of the several breeds , the develop- ment of the bones of the face in length and breadth and curvature differs enormously . The shape , as well as the breadth and length of the ramus of the ...
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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