The Origin of Species by Means of Natural Selection Or, The Preservation of Favored Races in the Struggle for Life |
From inside the book
Results 1-5 of 69
Page xiv
... tend to progress , in order to account for the existence at the present day of simple productions , he maintains that such forms are now spontaneously generated . * Geoffroy Saint Hilaire , as is stated in his ' Life , ' written by his ...
... tend to progress , in order to account for the existence at the present day of simple productions , he maintains that such forms are now spontaneously generated . * Geoffroy Saint Hilaire , as is stated in his ' Life , ' written by his ...
Page xv
... tend to vary in some degree , and , secondly , that agriculturists improve their domesticated animals by selection ; and then , he adds , but what is done in this latter case " by art , seems to be done with equal efficacy , though more ...
... tend to vary in some degree , and , secondly , that agriculturists improve their domesticated animals by selection ; and then , he adds , but what is done in this latter case " by art , seems to be done with equal efficacy , though more ...
Page 3
... tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection almost inevitably causes much Extinction of ...
... tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection almost inevitably causes much Extinction of ...
Page 10
... tends to re - appear in the offspring at a corresponding age , though some- times earlier . In many cases this could ... tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to ...
... tends to re - appear in the offspring at a corresponding age , though some- times earlier . In many cases this could ... tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to ...
Page 29
... tend , -perhaps more at one pericà than at another , as the breed rises or falls in fashion , -perhaps more in one district than in another , according to the state of civilisation of the inhabitants , -slowly to add to the ...
... tend , -perhaps more at one pericà than at another , as the breed rises or falls in fashion , -perhaps more in one district than in another , according to the state of civilisation of the inhabitants , -slowly to add to the ...
Other editions - View all
Common terms and phrases
adapted admit affinities allied species America analogous ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour continued crossed crustaceans degree developed difficulty distinct species doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formations formerly forms fossil Fritz Müller genera genus geological 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 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 reproductive resemblance rudimentary seeds sexual selection slight South America stamens sterility structure struggle successive supposed theory tion variability variations varieties vary whilst whole wings young