The Origin of Species by Means of Natural Selection,: Or the Preservation of Favoured Races in the Struggle for Life |
From inside the book
Results 1-5 of 88
Page 5
... plants and animals , one of the first points which strikes us is , that they generally differ more from each other than do the individuals of any one species or variety in a state of nature . And if we reflect on the vast diversity of ...
... plants and animals , one of the first points which strikes us is , that they generally differ more from each other than do the individuals of any one species or variety in a state of nature . And if we reflect on the vast diversity of ...
Page 7
... plants and animals when reared under new or unnatural con- ditions . Many facts clearly show how eminently susceptible the reproductive system is to very slight changes in the surrounding conditions . Nothing is more easy than to tame ...
... plants and animals when reared under new or unnatural con- ditions . Many facts clearly show how eminently susceptible the reproductive system is to very slight changes in the surrounding conditions . Nothing is more easy than to tame ...
Page 9
... plants , whilst dark - coloured individuals escape : Professor Wyman has recently communicated to me a good illustration of this fact ; on asking some farmers in Virginia how it was that all their pigs were black , they informed him ...
... plants , whilst dark - coloured individuals escape : Professor Wyman has recently communicated to me a good illustration of this fact ; on asking some farmers in Virginia how it was that all their pigs were black , they informed him ...
Page 12
... plants having an extraordinary inherent tendency to vary , and likewise to withstand diverse climates . I do not dispute that these capacities have added largely to the value of most of our domesticated productions ; but how could a ...
... plants having an extraordinary inherent tendency to vary , and likewise to withstand diverse climates . I do not dispute that these capacities have added largely to the value of most of our domesticated productions ; but how could a ...
Page 22
... plants is once pretty well established , the seed - raisers do not pick out the best plants , but merely go over their seed - beds , and pull up the " rogues , " as they call the plants that deviate from the proper standard . With ...
... plants is once pretty well established , the seed - raisers do not pick out the best plants , but merely go over their seed - beds , and pull up the " rogues , " as they call the plants that deviate from the proper standard . With ...
Other editions - View all
Common terms and phrases
accumulated adapted admit affinities allied species America analogous ancient appear beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species domestic animals doubt effects eggs embryo existing extinct extremely facts favourable female fertilised fertility flowers formation formerly forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number habits Hence hybrids important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation organs parent peculiar perfect pigeon pistil pollen present preserved principle probably produced quadrupeds ranked reciprocal crosses remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed tend theory tion variability variations varieties vary whilst whole wings young