The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
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Page 32
... various domestic animals and the cultivators of plants , with whom I have conversed , or whose treatises I have read , are firmly convinced that the several breeds to which each has attended , are descended from so many aboriginally ...
... various domestic animals and the cultivators of plants , with whom I have conversed , or whose treatises I have read , are firmly convinced that the several breeds to which each has attended , are descended from so many aboriginally ...
Page 34
... various breeds of sheep fitted either for cultivated land or mountain pasture , with the wool of one breed good for one purpose , and that of another breed for another purpose ; when we compare the many breeds of dogs , each good for ...
... various breeds of sheep fitted either for cultivated land or mountain pasture , with the wool of one breed good for one purpose , and that of another breed for another purpose ; when we compare the many breeds of dogs , each good for ...
Page 40
... various old treatises of the former and present state of carrier and tumbler pigeons in Britain , India , and Persia , we can trace the stages through which they have insensibly passed , and come to differ so great- ly from the rock ...
... various old treatises of the former and present state of carrier and tumbler pigeons in Britain , India , and Persia , we can trace the stages through which they have insensibly passed , and come to differ so great- ly from the rock ...
Page 51
... various definitions which have been given . of the term species . No one definition has satisfied all naturalists ; yet every naturalist knows vaguely what he means when he speaks of a species . Generally the term includes the unknown ...
... various definitions which have been given . of the term species . No one definition has satisfied all naturalists ; yet every naturalist knows vaguely what he means when he speaks of a species . Generally the term includes the unknown ...
Page 55
... various animals , in the two or three castes of sterile females or workers amongst insects , and in the immature and larval states of many of the lower animals . There are , also , cases of dimorphism and trimorphism , both with animals ...
... various animals , in the two or three castes of sterile females or workers amongst insects , and in the immature and larval states of many of the lower animals . There are , also , cases of dimorphism and trimorphism , both with animals ...
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Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellę larvę less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young