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 vii
... organised structures variable - Parts developed in an unusual manner are highly variable ; specific characters more variable than generic : secondary sexual characters variable - Species of the same genus vary in an analogous manner ...
... organised structures variable - Parts developed in an unusual manner are highly variable ; specific characters more variable than generic : secondary sexual characters variable - Species of the same genus vary in an analogous manner ...
Page xiii
... organisation ; and adds ( as translated by Mr. Clair Grece , who first pointed out the passage to me ) , " So what hinders the different parts [ of the body ] from having this merely accidental relation in nature as the teeth , for ...
... organisation ; and adds ( as translated by Mr. Clair Grece , who first pointed out the passage to me ) , " So what hinders the different parts [ of the body ] from having this merely accidental relation in nature as the teeth , for ...
Page xix
... organisation progresses by sudden leaps , but that the effects produced by the conditions of life are gradual . He argues with much force on general grounds } that species are not immutable productions . But I can- not see how the two ...
... organisation progresses by sudden leaps , but that the effects produced by the conditions of life are gradual . He argues with much force on general grounds } that species are not immutable productions . But I can- not see how the two ...
Page xxv
... facts as these , if we suppose that each species of animal and plant , or each great type of organisation , was formed and placed upon the surface of the globe at long intervals by a distinct act of creative power ; HISTORICAL SKETCH . XXV.
... facts as these , if we suppose that each species of animal and plant , or each great type of organisation , was formed and placed upon the surface of the globe at long intervals by a distinct act of creative power ; HISTORICAL SKETCH . XXV.
Page 8
... organisation has once begun to vary , it generally continues varying for many generations . No case is on record of a variable organism ceasing to vary under cultivation . Our oldest cultivated plants , such as wheat , still yield new ...
... organisation has once begun to vary , it generally continues varying for many generations . No case is on record of a variable organism ceasing to vary under cultivation . Our oldest cultivated plants , such as wheat , still yield new ...
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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 lamellæ larvæ 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