The Origin of Species by Means of Natural Selection: Or, The Preservation of Favored Races in the Struggle for Life, Volumen1AMS Press, 1972 - 479 páginas This is a reproduction of the original artefact. Generally these books are created from careful scans of the original. This allows us to preserve the book accurately and present it in the way the author intended. Since the original versions are generally quite old, there may occasionally be certain imperfections within these reproductions. We're happy to make these classics available again for future generations to enjoy! |
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Página 37
... flowers in the different varieties of the same species in the flower - garden ; the diversity of leaves , pods , or tubers , or whatever part is valued , in the kitchen - garden , in comparison with the flowers of the same varieties ...
... flowers in the different varieties of the same species in the flower - garden ; the diversity of leaves , pods , or tubers , or whatever part is valued , in the kitchen - garden , in comparison with the flowers of the same varieties ...
Página 115
... flowers , which have four stamens produ- cing a rather small quantity of pollen , and a rudimentary pistil ; other holly - trees bear only female flowers ; these have a full - sized pistil , and four stamens with shrivelled anthers , in ...
... flowers , which have four stamens produ- cing a rather small quantity of pollen , and a rudimentary pistil ; other holly - trees bear only female flowers ; these have a full - sized pistil , and four stamens with shrivelled anthers , in ...
Página 269
... flowers of two kinds , -the one open of the ordinary structure , the other closed and imperfect . These two kinds of flowers sometimes differ wonder- fully in structure , yet may be seen to graduate into each other on the same plant ...
... flowers of two kinds , -the one open of the ordinary structure , the other closed and imperfect . These two kinds of flowers sometimes differ wonder- fully in structure , yet may be seen to graduate into each other on the same plant ...
Contenido
CHAPTER I | 5 |
VARIATION UNDER NATURE | 51 |
Its bearing on natural selectionThe term used in a wide sense | 75 |
Derechos de autor | |
Otras 5 secciones no mostradas
Términos y frases comunes
acquired 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 developed difficulty distinct species disuse 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 improved increase in number individual differences inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ large number larger genera larvæ less likewise males manner Melipona Mivart natural selection naturalists nearly nest occasionally offspring organisation organs origin Origin of Species perfect period pigeons pollen pollen-grains present preserved principle probably produced progenitor quadrupeds rank Red Grouse relation remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency tion transitional tree variability variations varieties vary widely wings young