The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life, Volume 1 |
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Page viii
... bees - Slave - making ants- Hive - bee , its cell - making instinct - Changes of instinct and structure not necessarily simultaneous - Difficulties of the theory of the Natural Selection of instincts - Neuter or sterile insects Summary ...
... bees - Slave - making ants- Hive - bee , its cell - making instinct - Changes of instinct and structure not necessarily simultaneous - Difficulties of the theory of the Natural Selection of instincts - Neuter or sterile insects Summary ...
Page 90
... bees do not visit this flower . I have also found that the visits of bees are necessary for the fertilisation of some kinds of clover ; for instance , 20 heads of Dutch clover ( Trifolium repens ) yielded 2,290 seeds , but 20 other ...
... bees do not visit this flower . I have also found that the visits of bees are necessary for the fertilisation of some kinds of clover ; for instance , 20 heads of Dutch clover ( Trifolium repens ) yielded 2,290 seeds , but 20 other ...
Page 91
... bees more numerous than elsewhere , which I attribute to the number of cats that destroy the mice . " Hence it is quite credible that the presence of a feline animal in large numbers in a district might determine , through the ...
... bees more numerous than elsewhere , which I attribute to the number of cats that destroy the mice . " Hence it is quite credible that the presence of a feline animal in large numbers in a district might determine , through the ...
Page 93
... bee is rapidly exterminating the small , stingless native bee . One species of charlock has been known to supplant another CHAP . III . ] STRUGGLE FOR EXISTENCE . 93.
... bee is rapidly exterminating the small , stingless native bee . One species of charlock has been known to supplant another CHAP . III . ] STRUGGLE FOR EXISTENCE . 93.
Page 115
... bees , never- theless every female flower which I examined had been effectually fertilised by the bees , which had flown from tree to tree in search of nectar . But to return to our imaginary case : as soon as the plant had been ...
... bees , never- theless every female flower which I examined had been effectually fertilised by the bees , which had flown from tree to tree in search of nectar . But to return to our imaginary case : as soon as the plant had been ...
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Common terms and phrases
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 divergence 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 structure struggle supposed swimbladder tend tendency tion transitional tree variability variations varieties vary widely wings young