Darwinia: Essays and Reviews Pertaining to DarwinismD. Appleton, 1877 - Всего страниц: 404 |
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Стр. 31
... favor it in the animal kingdom . With mingled races reversion seems well made out in the case of pigeons . The common opinion upon this sub- ject therefore probably has some foundation . But even if we regard varieties as oscillations ...
... favor it in the animal kingdom . With mingled races reversion seems well made out in the case of pigeons . The common opinion upon this sub- ject therefore probably has some foundation . But even if we regard varieties as oscillations ...
Стр. 36
... favors the broader view . Whether we should continue to regard the forms in question as distinct species , depends upon what mean- ing we shall finally attach to that term ; and that de- pends upon how far the doctrine of derivation can ...
... favors the broader view . Whether we should continue to regard the forms in question as distinct species , depends upon what mean- ing we shall finally attach to that term ; and that de- pends upon how far the doctrine of derivation can ...
Стр. 49
... favor of a gradation of varieties into species , or into what may be regarded as such , the same may be extended to the Tertiary period . In both cases , what some call species others call varieties ; and in the later Tertiary shells 1 ...
... favor of a gradation of varieties into species , or into what may be regarded as such , the same may be extended to the Tertiary period . In both cases , what some call species others call varieties ; and in the later Tertiary shells 1 ...
Стр. 60
... brought to bear in its favor . One of its neatest points , certainly a very strong one for the local origination of species , and their gradual diffu- sion under natural agencies , we must reserve for some 60 DARWINIANA .
... brought to bear in its favor . One of its neatest points , certainly a very strong one for the local origination of species , and their gradual diffu- sion under natural agencies , we must reserve for some 60 DARWINIANA .
Стр. 82
... favor of design , when he opens Mr. Darwin's book . There he finds that an eye is no more than a vital aggregation or growth , directed , not by design nor chance , but moulded by natural variation and natural selection , through which ...
... favor of design , when he opens Mr. Darwin's book . There he finds that an eye is no more than a vital aggregation or growth , directed , not by design nor chance , but moulded by natural variation and natural selection , through which ...
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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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Стр. 131 - 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.
Стр. 2 - 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.
Стр. 38 - 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.
Стр. 38 - 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...
Стр. 276 - My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth.
Стр. 396 - XVIII. The Nature of Light: With a General Account of Physical Optics.
Стр. 18 - 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.
Стр. 395 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Стр. 104 - 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...
Стр. 104 - ... 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.