On the Origin of Species by Means of Natural Selection: Or The Preservation of Favoured Races in the Struggle for LifeHumphrey Milford, Oxford University Press, 1923 - 454 páginas |
Dentro del libro
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Página 3
... habit , or of the volition of the plant itself . The author of the Vestiges of Creation would , I presume , say that , after a certain unknown number of generations , some bird had given birth to a woodpecker , and some plant to the ...
... habit , or of the volition of the plant itself . The author of the Vestiges of Creation would , I presume , say that , after a certain unknown number of generations , some bird had given birth to a woodpecker , and some plant to the ...
Página 7
... Habit - Correlation of Growth- Inheritance - Character of Domestic Varieties -- Difficulty of dis tinguishing between Varieties and Species - Origin of Domestic Varieties from one or more Species - Domestic Pigeons , their Differences ...
... Habit - Correlation of Growth- Inheritance - Character of Domestic Varieties -- Difficulty of dis tinguishing between Varieties and Species - Origin of Domestic Varieties from one or more Species - Domestic Pigeons , their Differences ...
Página 10
... Habit also has a decided influence , as in the period of flowering with plants when transported from one climate to another . In animals it has a more marked effect ; for instance , I find in the domestic duck that the bones of the wing ...
... Habit also has a decided influence , as in the period of flowering with plants when transported from one climate to another . In animals it has a more marked effect ; for instance , I find in the domestic duck that the bones of the wing ...
Página 17
... habits , voice , and con- stitution , etc. , of the humped Indian cattle , that these had descended from a different aboriginal stock from our European cattle ; and several competent judges believe that these latter have had more than ...
... habits , voice , and con- stitution , etc. , of the humped Indian cattle , that these had descended from a different aboriginal stock from our European cattle ; and several competent judges believe that these latter have had more than ...
Página 20
... habit of flying at a great height in a compact flock , and tumbling in the air head over heels . The runt is a bird of great size , with long , massive beak and large feet ; some of the sub - breeds of runts have very long necks ...
... habit of flying at a great height in a compact flock , and tumbling in the air head over heels . The runt is a bird of great size , with long , massive beak and large feet ; some of the sub - breeds of runts have very long necks ...
Otras ediciones - Ver todas
On the Origin of Species by Means of Natural Selection: or the Preservation ... Charles Darwin Vista previa limitada - 2023 |
Términos y frases comunes
accumulated adapted affinities allied species America amount analogous ancient appear Archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence doubt embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing land larvæ less living male mammals manner Marsupials migration modification modified descendants natural selection naturalists nearly nest oceanic islands offspring organisation perfect pigeons pistil plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rock-pigeon rudimentary organs seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder tend theory tion trees variability variation vary whole widely