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 195
... namely , the common turnip . According to the ordinary view of each species having been independently created , we should have to attribute this similarity in the enlarged stems of these three plants , not to the vera causa of community ...
... namely , the common turnip . According to the ordinary view of each species having been independently created , we should have to attribute this similarity in the enlarged stems of these three plants , not to the vera causa of community ...
Página 303
... namely the structure of the flowers of orchids , and the movements of climbing plants . With respect to the former , he says , " the explanation of their origin is deemed throughly unsatisfactory - utterly in- sufficient to explain the ...
... namely the structure of the flowers of orchids , and the movements of climbing plants . With respect to the former , he says , " the explanation of their origin is deemed throughly unsatisfactory - utterly in- sufficient to explain the ...
Página 304
... namely their pollinia . A pollinium when highly developed consists of a mass of pollen - grains , affixed to an elastic foot - stalk or caudicle , and this to a little mass of extremely viscid matter . The pollinia are by this means ...
... namely their pollinia . A pollinium when highly developed consists of a mass of pollen - grains , affixed to an elastic foot - stalk or caudicle , and this to a little mass of extremely viscid matter . The pollinia are by this means ...
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