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 140
... marsupials , which are divided into groups differing but little from each other , and feebly representing , as Mr. Waterhouse and others have remarked , our carnivorous , ruminant , and rodent mammals , could successfully compete with ...
... marsupials , which are divided into groups differing but little from each other , and feebly representing , as Mr. Waterhouse and others have remarked , our carnivorous , ruminant , and rodent mammals , could successfully compete with ...
Página 154
... marsupials , edentata , and rodents , co - exist in South America in the same region with numerous monkeys , and probably interfere little with each other . Although organisation , on the whole , may have advanced and be still advancing ...
... marsupials , edentata , and rodents , co - exist in South America in the same region with numerous monkeys , and probably interfere little with each other . Although organisation , on the whole , may have advanced and be still advancing ...
Página 295
... marsupial form ; and if so , the mammary glands will have been at first developed within the marsupial sack . In the case of the fish ( Hippocampus ) the eggs are hatched , and the young are reared for a time , within a sack of this ...
... marsupial form ; and if so , the mammary glands will have been at first developed within the marsupial sack . In the case of the fish ( Hippocampus ) the eggs are hatched , and the young are reared for a time , within a sack of this ...
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