The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, Volumen1D. Appleton, 1898 |
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Página xxv
... facts as these , if we 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 6 long intervals by a distinct act of creative power. HISTORICAL SKETCH .
... facts as these , if we 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 6 long intervals by a distinct act of creative power. HISTORICAL SKETCH .
Página 1
... facts in the distribution of the organic beings inhabiting South America , and in the geological relations of the present to the past in- habitants of that continent . These facts , as will be seen in the latter chapters of this volume ...
... facts in the distribution of the organic beings inhabiting South America , and in the geological relations of the present to the past in- habitants of that continent . These facts , as will be seen in the latter chapters of this volume ...
Página 2
... facts in illustration , but which , I hope , in most cases will suffice . No one can feel more sensible than I do of the necessity of hereafter publishing in detail all the facts , with refer- ences , on which my conclusions have been ...
... facts in illustration , but which , I hope , in most cases will suffice . No one can feel more sensible than I do of the necessity of hereafter publishing in detail all the facts , with refer- ences , on which my conclusions have been ...
Página 3
... facts and arguments on both sides of each question ; and this is here impossible . I much regret that want of space prevents my having the satisfaction of acknowledging the generous assistance which I have received from very many ...
... facts and arguments on both sides of each question ; and this is here impossible . I much regret that want of space prevents my having the satisfaction of acknowledging the generous assistance which I have received from very many ...
Página 4
... too briefly , as it can be treated properly only by giving long catalogues of facts . We shall , however , be enabled to discuss what circumstances are most favour- able to variation . In the next chapter the Struggle. 4 INTRODUCTION .
... too briefly , as it can be treated properly only by giving long catalogues of facts . We shall , however , be enabled to discuss what circumstances are most favour- able to variation . In the next chapter the Struggle. 4 INTRODUCTION .
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Términos y frases comunes
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 descendants 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 increase inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less males manner Melipona Mivart modified natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species parent perfect period pigeons pollen pollen-grains present preserved prey principle probably produced progenitor quadrupeds rank rarely Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion tree variability variations varieties vary widely wings young