The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
From inside the book
Results 1-5 of 74
Page 10
... male and female unite . How many animals there are which will not breed , though kept in an almost free state in their native coun- try ! This is generally , but erroneously , attributed to vitiated instincts . Many cultivated plants ...
... male and female unite . How many animals there are which will not breed , though kept in an almost free state in their native coun- try ! This is generally , but erroneously , attributed to vitiated instincts . Many cultivated plants ...
Page 13
... males . Colour and con- stitutional peculiarities go together , of which many re- markable cases could be given amongst animals and plants . From facts collected by Heusinger , it appears that white sheep and pigs are injured by certain ...
... males . Colour and con- stitutional peculiarities go together , of which many re- markable cases could be given amongst animals and plants . From facts collected by Heusinger , it appears that white sheep and pigs are injured by certain ...
Page 15
... males of our domestic breeds are often trans- mitted , either exclusively or in a much greater degree , to the males alone . A much more important rule , which I think may be trusted , is that , at whatever period of life a peculiarity ...
... males of our domestic breeds are often trans- mitted , either exclusively or in a much greater degree , to the males alone . A much more important rule , which I think may be trusted , is that , at whatever period of life a peculiarity ...
Page 16
... male element ; in nearly the same manner as the increased length of the horns in the offspring from a short - horned cow by a long - horned bull , though appearing late in life , is clearly due to the male element . Having alluded to ...
... male element ; in nearly the same manner as the increased length of the horns in the offspring from a short - horned cow by a long - horned bull , though appearing late in life , is clearly due to the male element . Having alluded to ...
Page 24
... male 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 ...
... male 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 ...
Other editions - View all
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