The Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life, Том 1John Murray, 1888 - Всего страниц: 458 |
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Стр. vi
... - Indefinite multiplication of species - Summary ·· 97 CHAPTER V. LAWS OF VARIATION . Effects of changed conditions - Use and disuse , combined with CONTENTS . vii tion - Correlated variation - Compensation and vi CONTENTS .
... - Indefinite multiplication of species - Summary ·· 97 CHAPTER V. LAWS OF VARIATION . Effects of changed conditions - Use and disuse , combined with CONTENTS . vii tion - Correlated variation - Compensation and vi CONTENTS .
Стр. vii
... tion - Correlated variation - Compensation and economy of growth - False correlations - Multiple , rudimentary , and lowly organised structures variable - Parts developed in an unusual manner are highly variable ; specific characters ...
... tion - Correlated variation - Compensation and economy of growth - False correlations - Multiple , rudimentary , and lowly organised structures variable - Parts developed in an unusual manner are highly variable ; specific characters ...
Стр. x
... tion of useful structures . Lastly , reasons are given for disbelieving in great and sudden modifi- cations . Gradations of character , often accom- panied by changes of function , are likewise here incidentally considered . The ...
... tion of useful structures . Lastly , reasons are given for disbelieving in great and sudden modifi- cations . Gradations of character , often accom- panied by changes of function , are likewise here incidentally considered . The ...
Стр. xvi
... tion ; and then , he adds , but what is done in this latter case " by art , seems to be done with equal efficacy , though more slowly , by nature , in the formation of varieties of mankind , fitted for the country which they inhabit ...
... tion ; and then , he adds , but what is done in this latter case " by art , seems to be done with equal efficacy , though more slowly , by nature , in the formation of varieties of mankind , fitted for the country which they inhabit ...
Стр. xxv
... tion of species . ( The Philosophy of Creation ' has been treated in a masterly manner by the Rev. Baden Powell , in his ́Essays on the Unity of Worlds , ' 1855. Nothing can be more striking than the manner in which he shows that the ...
... tion of species . ( The Philosophy of Creation ' has been treated in a masterly manner by the Rev. Baden Powell , in his ́Essays on the Unity of Worlds , ' 1855. Nothing can be more striking than the manner in which he shows that the ...
Другие издания - Просмотреть все
The Origin of Species by Means of Natural Selection: Or, The ..., Том 1 Charles Darwin Полный просмотр - 1889 |
The Origin of Species by Means of Natural Selection: Or, the ..., Том 1 Charles Darwin Полный просмотр - 1898 |
Часто встречающиеся слова и выражения
acquired 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 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 remarked resemble rock-pigeon seeds sexes sexual sexual selection slight stamens striped structure struggle supposed swimbladder tend tendency theory tion transitional tree variability variations varieties vary widely wings young