Darwinism Stated by Darwin Himself: Characteristic Passages from the Writings of Charles DarwinD. Appleton, 1884 - 351 من الصفحات |
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الصفحة 27
... no exception to the rule that leaves which sleep continue to Any one who had never observed continu- ously a sleeping plant would naturally suppose move during the whole twenty - four hours ; they THE MOVEMEMTS AND HABITS OF PLANTS . 27.
... no exception to the rule that leaves which sleep continue to Any one who had never observed continu- ously a sleeping plant would naturally suppose move during the whole twenty - four hours ; they THE MOVEMEMTS AND HABITS OF PLANTS . 27.
الصفحة 40
... suppose . In almost all humid Action of countries they are extraordinarily numerous , Earthworms , page 305 . and for their size possess great muscular power . In many parts of England a weight of more than ten tons ( 10,516 kilogrammes ) ...
... suppose . In almost all humid Action of countries they are extraordinarily numerous , Earthworms , page 305 . and for their size possess great muscular power . In many parts of England a weight of more than ten tons ( 10,516 kilogrammes ) ...
الصفحة 72
... suppose that all the breeds were suddenly produced as perfect and as useful as we now see them ; indeed , in many cases , we know that this has not been their history . The key is man's power of accumulative selection : Nature gives ...
... suppose that all the breeds were suddenly produced as perfect and as useful as we now see them ; indeed , in many cases , we know that this has not been their history . The key is man's power of accumulative selection : Nature gives ...
الصفحة 76
... suppose either that they do now somewhere exist , or may formerly have existed ; and here a wide door for the entry of doubt and conjecture is opened . Hence , in determining whether a form should be ranked as a species or a variety ...
... suppose either that they do now somewhere exist , or may formerly have existed ; and here a wide door for the entry of doubt and conjecture is opened . Hence , in determining whether a form should be ranked as a species or a variety ...
الصفحة 104
... suppose that at the same time it is furnished with a rattle for its own in- jury , namely , to warn its prey . I would almost as soon believe that the cat curls the end of its tail when prepar- ing to spring , in order to warn the ...
... suppose that at the same time it is furnished with a rattle for its own in- jury , namely , to warn its prey . I would almost as soon believe that the cat curls the end of its tail when prepar- ing to spring , in order to warn the ...
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طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
acquired action admit allied apes appear Asa Gray become believe birds blush body breeds Catarrhine cause characters closely Cloth DARWIN degree descended developed distinct species domestic doubt early effects eggs existence expression extinct eyes fact favorable feel females fertilization forms gemmules genera geotropism habit hair HERBERT SPENCER hermaphrodites highly horse increase individuals inhabitants inherited insects instance intermediate islands kind labellum lancelet language larvæ laws less living lower animals males mammals manner ment mental mind modified monkeys movements muscles natural selection naturalists observed offspring organic Origin of Species papillæ parent peculiar period plants pollen possess present principle probably produced Professor progenitors Quadrumana quadrupeds races remarkable resemble rudimentary savages seeds seems seen sexes sexual selection slight South America structure suppose T. H. HUXLEY tend tendency tion transmitted utricle variability variations varieties various vertebræ whole wild worms young
مقاطع مشهورة
الصفحة i - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
الصفحة 347 - It is interesting to contemplate an entangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other, and dependent upon each other in so complex a manner, have all been produced by laws acting around us.
الصفحة 110 - To suppose that the eye, with all its inimitable contrivances for adjusting the focus to different distances, for admitting different amounts of light, and for the correction of spherical and chromatic aberration, could have been formed by natural selection, seems, I freely confess, absurd in the highest possible degree.
الصفحة 72 - The key is man's power of accumulative selection: nature gives successive variations; man adds them up in certain directions useful to him. In this sense he may be said to have made for himself useful breeds.
الصفحة 254 - It is incredible that all these facts should speak falsely. He who is not content to look, like a savage, at the phenomena of nature as disconnected, cannot any longer believe that man is the work of a separate act of creation.
الصفحة 44 - It may be doubted whether there are many other animals which have played so important a part in the history of the world, as have these lowly organised creatures.
الصفحة 308 - But as my conclusions have lately been much misrepresented, and it has been stated that I attribute the modification of species exclusively to natural selection, I may be permitted to remark that in the first edition of this work, and subsequently, I placed in a most conspicuous position — namely, at the close of the Introduction — the following words: "I am convinced that natural selection has been the main but not thé exclusive means of modification.