The Origin of Species by Means of Natural Selection: Or, the Preservation of Favored Races in the Struggle for Life, Volumen1D. Appleton, 1898 |
Dentro del libro
Resultados 1-5 de 90
Página x
... modified . On the modification of the eye . Transitions through the acceleration or retarda- tion of the period of reproduction . The account of the electric organ of fishes added to . Analogical resemblance between the eyes of Cepha ...
... modified . On the modification of the eye . Transitions through the acceleration or retarda- tion of the period of reproduction . The account of the electric organ of fishes added to . Analogical resemblance between the eyes of Cepha ...
Página xi
... modified . Homological structure of the feet of certain mar- supial animals . On serial homologies , corrected . Mr ... modification of species , as always maintained in this work . The belief in the separate creation of species gen ...
... modified . Homological structure of the feet of certain mar- supial animals . On serial homologies , corrected . Mr ... modification of species , as always maintained in this work . The belief in the separate creation of species gen ...
Página xiii
... modification , and that the existing forms of life are the descendants by true generation of pre - existing forms . Passing over allusions to the sub- ject in the classical writers , * the first author who in * Aristotle , in his ...
... modification , and that the existing forms of life are the descendants by true generation of pre - existing forms . Passing over allusions to the sub- ject in the classical writers , * the first author who in * Aristotle , in his ...
Página xx
... modification than that they have been separately created : the author first promulgated this opinion in 1831 . Professor Owen , in 1849 ( Nature of Limbs , ' p . 86 ) , wrote as follows : - " The archetypal idea was manifested in the ...
... modification than that they have been separately created : the author first promulgated this opinion in 1831 . Professor Owen , in 1849 ( Nature of Limbs , ' p . 86 ) , wrote as follows : - " The archetypal idea was manifested in the ...
Página xxiii
... modified ; and he attributes the modification to the change of circumstances . The author ( 1855 ) has also treated Psychology on the principle of the necessary acquirement of each mental power and capacity by gra- dation . In 1852 M ...
... modified ; and he attributes the modification to the change of circumstances . The author ( 1855 ) has also treated Psychology on the principle of the necessary acquirement of each mental power and capacity by gra- dation . In 1852 M ...
Otras ediciones - Ver todas
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