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43개의 결과 중 1 - 5개
23 페이지
... course of time , and to demonstrate its compatibility with a strictly theistic view of the uni- verse , is one thing ; to substantiate the theory itself or show its likelihood is quite another thing . This brings us to consider what ...
... course of time , and to demonstrate its compatibility with a strictly theistic view of the uni- verse , is one thing ; to substantiate the theory itself or show its likelihood is quite another thing . This brings us to consider what ...
29 페이지
... course in obvious relation to supply of food . Really , we no more know the reason why the pro- geny occasionally deviates from the parent than we do why it usually resembles it . Though the laws and conditions governing variation are ...
... course in obvious relation to supply of food . Really , we no more know the reason why the pro- geny occasionally deviates from the parent than we do why it usually resembles it . Though the laws and conditions governing variation are ...
30 페이지
... course of variation as he leads a streamlet - apparently at will , but never against the force of gravitation - to a long distance from its source , and makes it more subservient to his use or fancy . He unconsciously strengthens those ...
... course of variation as he leads a streamlet - apparently at will , but never against the force of gravitation - to a long distance from its source , and makes it more subservient to his use or fancy . He unconsciously strengthens those ...
42 페이지
... course of centuries , the proportional numbers and kinds of trees now growing on the old Indian ruins ! " - ( pp . 74 , 75. ) For reasons obvious upon reflection , the competi- tion is often , if not generally , most severe betwen ...
... course of centuries , the proportional numbers and kinds of trees now growing on the old Indian ruins ! " - ( pp . 74 , 75. ) For reasons obvious upon reflection , the competi- tion is often , if not generally , most severe betwen ...
44 페이지
... course of ages , and under varying condi- tions of life , organic beings vary at all in the several parts of their organization , and I think this cannot be disputed ; if there be , owing to the high geometrical powers of increase of ...
... course of ages , and under varying condi- tions of life , organic beings vary at all in the several parts of their organization , and I think this cannot be disputed ; if there be , owing to the high geometrical powers of increase of ...
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adaptation Agassiz American ammonia appears argument atheistic bald cypress botanists bristles Candolle Charles Darwin Cloth common connection creation Cretaceous Darwin Darwinian derivation digestion Dionæa direct divine doctrine Drosera Europe evidence evolution existence explain extinct facts favor final causes flies force forms fossil genera genus geological glands Glyptostrobus gradations ground Hodge human hypothesis idea illustration individuals inference insects instance Japan laws leaf leaves less Linnæus living manifested matter means ment mind miocene movement natural history natural selection natural theology naturalists nebular hypothesis North organic origin of species peculiar pepsin perhaps philosophical phyllotaxis physical pitchers plants and animals present principle probably produced Prof question races redwoods regard region remarkable Sarracenia scientific secretion seems Sequoia succession sundew suppose Taxodium teleology tentacles tertiary theistic theory things thought tion tive trees variation varieties vary vegetable whole
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131 페이지 - And God said, Let the earth bring forth the living creature after his kind, cattle, and creeping thing, and beast of the earth after his kind: and it was so.
2 페이지 - Our Place among Infinities: A Series of Essays contrasting our Little Abode in Space and Time with the Infinities Around us. Crown 8vo, cloth extra, 6s. The Expanse of Heaven : A Series of Essays on the Wonders of the Firmament.
38 페이지 - There is no exception to the rule that every organic being naturally increases at so high a rate, that if not destroyed, the earth would soon be covered by the progeny of a single pair.
38 페이지 - We behold the face of nature bright with gladness, we often see superabundance of food ; we do not see, or we forget, that the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget how largely these songsters, or their eggs, or their nestlings, are destroyed by birds and beasts of prey...
276 페이지 - My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth.
396 페이지 - XVIII. The Nature of Light: With a General Account of Physical Optics.
18 페이지 - The green and budding twigs may represent existing species; and those produced during each former year may represent the long succession of extinct species. At each period of growth all the growing twigs have tried to branch out on all sides, and to overtop and kill the surrounding twigs and branches, in the same manner as species and groups of species have tried to overmaster other species in the great battle for life.
395 페이지 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
104 페이지 - I can entertain no doubt, after the most deliberate study and dispassionate judgment of which I am capable, that the view which most naturalists until recently entertained, and which I formerly entertained, namely, that each species has been independently created, is erroneous. I am fully convinced that species are not immutable...
104 페이지 - ... 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 the exclusive means of modification.