On the Origin of the Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page xxiii
... suppose that each species of animal and plant , or each great type of organisation , was formed and placed upon the surface of the globe at long intervals by a distinct act of creative power ; and it is well to recollect that such an ...
... suppose that each species of animal and plant , or each great type of organisation , was formed and placed upon the surface of the globe at long intervals by a distinct act of creative power ; and it is well to recollect that such an ...
Page 28
... hypothesis so far as to suppose that species , aboriginally as distinct as carriers , tumblers , pouters , and fantails now are , should yield offspring perfectly fertile inter se , seems to me 28 CHAP . I. DOMESTIC PIGEONS .
... hypothesis so far as to suppose that species , aboriginally as distinct as carriers , tumblers , pouters , and fantails now are , should yield offspring perfectly fertile inter se , seems to me 28 CHAP . I. DOMESTIC PIGEONS .
Page 33
... suppose that all the breeds were suddenly produced as perfect and as useful as we now see them ; indeed , in many cases , we know that this has not been their history . The key is man's power of accumulative selection nature gives ...
... suppose that all the breeds were suddenly produced as perfect and as useful as we now see them ; indeed , in many cases , we know that this has not been their history . The key is man's power of accumulative selection nature gives ...
Page 54
... suppose either that they do now somewhere exist , or may formerly have existed ; and here a wide door for the entry of doubt and conjecture is opened . Hence , in determining whether a form should be ranked as a species or a variety ...
... suppose either that they do now somewhere exist , or may formerly have existed ; and here a wide door for the entry of doubt and conjecture is opened . Hence , in determining whether a form should be ranked as a species or a variety ...
Page 103
... suppose that the fleetest prey , a deer for instance , had from any change in the country increased in numbers , or that other prey had decreased in numbers , during that season of the year when the wolf was hardest pressed for food ...
... suppose that the fleetest prey , a deer for instance , had from any change in the country increased in numbers , or that other prey had decreased in numbers , during that season of the year when the wolf was hardest pressed for food ...
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Common terms and phrases
accumulated adapted admit affinities allied species America analogous ancient appear archipelago Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common continuous crossed crustaceans degree developed difficulty distinct species divergence doubt eggs embryo existing exterminated extinct extremely facts favourable females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological Glacial period gradations greater number groups of species habits Hence hermaphrodites hive-bee hybrids important individuals inhabitants inherited insects instance instincts intercrossing larvæ less living males mammals manner migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation parent perfect pigeons pistil pollen present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble rudimentary organs seeds sexual sexual selection Silurian slight South America stamens sterility structure struggle successive suppose theory tion variability variations vary whilst whole