On the Origin of Species by Means of Natural Selection: Or The Preservation of Favored Races in the Struggle for Life, Volumen2D. Appleton, 1888 - 458 páginas |
Dentro del libro
Resultados 1-5 de 68
Página vi
... inhabitants of any small area , and to naturalisation - Action of Natural Selection , through Divergence of Character and Extinction , on the descendants from a common parent - Explains the grouping of all organic beings Advance in ...
... inhabitants of any small area , and to naturalisation - Action of Natural Selection , through Divergence of Character and Extinction , on the descendants from a common parent - Explains the grouping of all organic beings Advance in ...
Página viii
... inhabitants of oceanic islands Absence of Batrachians and of terrestrial Mammals - On the relation of the inhabitants of islands to those of the nearest main- land - On colonization from the nearest source with subsequent modi- fication ...
... inhabitants of oceanic islands Absence of Batrachians and of terrestrial Mammals - On the relation of the inhabitants of islands to those of the nearest main- land - On colonization from the nearest source with subsequent modi- fication ...
Página xv
... inhabitants of the middle regions of Africa , some one would be better fitted than the others to bear the diseases of the country . This race would consequently multiply , while the others would decrease ; not only from their inability ...
... inhabitants of the middle regions of Africa , some one would be better fitted than the others to bear the diseases of the country . This race would consequently multiply , while the others would decrease ; not only from their inability ...
Página 1
... inhabitants of that continent . These facts , as will be seen in the latter chapters of this volume , seemed to throw some light on the origin of species -- that mystery of mysteries , as it has been called by one of our greatest ...
... inhabitants of that continent . These facts , as will be seen in the latter chapters of this volume , seemed to throw some light on the origin of species -- that mystery of mysteries , as it has been called by one of our greatest ...
Página 4
... inhabitant of this world . Still less do we know of the mutual relations of the innumerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure ...
... inhabitant of this world . Still less do we know of the mutual relations of the innumerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure ...
Otras ediciones - Ver todas
Términos y frases comunes
adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed tend theory tion variability variations varieties vary whilst whole wings young