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 |
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Página xvi
... peculiar characters ; " but farther on ( p . 18 ) he adds , " except the original types or ancestors of the genus . " In 1843-44 Professor Ha'deman ( Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the ...
... peculiar characters ; " but farther on ( p . 18 ) he adds , " except the original types or ancestors of the genus . " In 1843-44 Professor Ha'deman ( Boston Journal of Nat . Hist . U. States , ' vol . iv . p . 468 ) has ably given the ...
Página xvii
... peculiar habits of life . The work , from its powerful and brilliant style , though displaying in the earlier editions little accurate knowledge and a great want of scientific caution , imme- diately had a very wide circulation . In my ...
... peculiar habits of life . The work , from its powerful and brilliant style , though displaying in the earlier editions little accurate knowledge and a great want of scientific caution , imme- diately had a very wide circulation . In my ...
Página 14
... peculiar to Great Britain ! When we bear in mind that Britain has now not one peculiar mammal , and France but few distinct from those of Germany , and so with Hungary , Spain , & c . , but that each of these kingdoms possesses several ...
... peculiar to Great Britain ! When we bear in mind that Britain has now not one peculiar mammal , and France but few distinct from those of Germany , and so with Hungary , Spain , & c . , but that each of these kingdoms possesses several ...
Página 38
... peculiar to Great Britain . A wide distance between the homes of two doubtful forms leads many naturalists to rank them as distinct species ; but what distance , it has been well asked , will suffice ; if that between America and Europe ...
... peculiar to Great Britain . A wide distance between the homes of two doubtful forms leads many naturalists to rank them as distinct species ; but what distance , it has been well asked , will suffice ; if that between America and Europe ...
Página 57
... peculiar structure , never sets a seed . Nearly all our orchidaceous plants absolutely require the visits of insects to remove their pollen - masses and thus to fertilise them . J find from experiments that humble - bees are almost ...
... peculiar structure , never sets a seed . Nearly all our orchidaceous plants absolutely require the visits of insects to remove their pollen - masses and thus to fertilise them . J find from experiments that humble - bees are almost ...
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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