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 24
... bird , is also remarkable from the wonderful development of the carunculated skin about the head ; and this is accompanied by greatly elongated eyelids , very large external orifices to the nostrils , and a wide gape of mouth . The ...
... bird , is also remarkable from the wonderful development of the carunculated skin about the head ; and this is accompanied by greatly elongated eyelids , very large external orifices to the nostrils , and a wide gape of mouth . The ...
Page 25
... birds the head and tail touch : the oil - gland is quite aborted . Several other less distinct 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 ...
... birds the head and tail touch : the oil - gland is quite aborted . Several other less distinct 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 ...
Page 26
... birds , would certainly be ranked by him as well - defined species . Moreover , I do not believe that any ornithologist would in this case place the English carrier , the short - faced tumbler , the runt , the barb , pouter , and ...
... birds , would certainly be ranked by him as well - defined species . Moreover , I do not believe that any ornithologist would in this case place the English carrier , the short - faced tumbler , the runt , the barb , pouter , and ...
Page 27
... birds breeding on precipices , and good fliers , are unlikely to be ex- terminated ; and the common rock - pigeon , which has the same habits with the domestic breeds , has not been exterminated even on several of the smaller British ...
... birds breeding on precipices , and good fliers , are unlikely to be ex- terminated ; and the common rock - pigeon , which has the same habits with the domestic breeds , has not been exterminated even on several of the smaller British ...
Page 28
... birds , all the above marks , even to the white edging of the outer tail- feathers , sometimes concur perfectly developed . More- over , when birds belonging to two or more distinct breeds are crossed , none of which are blue or have ...
... birds , all the above marks , even to the white edging of the outer tail- feathers , sometimes concur perfectly developed . More- over , when birds belonging to two or more distinct breeds are crossed , none of which are blue or have ...
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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