Darwiniana: Essays and Reviews Pertaining to DarwinismD. Appleton, 1878 - 396 páginas |
Dentro del libro
Resultados 1-5 de 49
Página 16
... reason remains for fixing upon this or that degree as specific , at least no natural standard , by which the opinions of different naturalists may be correlated . Species upon this view are enduring , but subjective and ideal . Any ...
... reason remains for fixing upon this or that degree as specific , at least no natural standard , by which the opinions of different naturalists may be correlated . Species upon this view are enduring , but subjective and ideal . Any ...
Página 22
... reason why he should , and many reasons why he should not . Indeed , as we contemplate the actual direction of investigation and speculation in the physical and natural sciences , we dimly apprehend a probable synthesis of these diver ...
... reason why he should , and many reasons why he should not . Indeed , as we contemplate the actual direction of investigation and speculation in the physical and natural sciences , we dimly apprehend a probable synthesis of these diver ...
Página 27
... to show , adducing cogent reasons for the common . opinion that all have descended from the wild rock- pigeon . Then follow some suggestive remarks : " I have discussed the probable origin of domestic pigeons THE ORIGIN OF SPECIES . 27.
... to show , adducing cogent reasons for the common . opinion that all have descended from the wild rock- pigeon . Then follow some suggestive remarks : " I have discussed the probable origin of domestic pigeons THE ORIGIN OF SPECIES . 27.
Página 29
... 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 known to a cer- tain extent , those governing inheritance are appar- ently ...
... 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 known to a cer- tain extent , those governing inheritance are appar- ently ...
Página 42
... reasons obvious upon reflection , the competi- tion is often , if not generally , most severe betwen nearly related species when they are in contact , so that one drives the other before it , as the Hanoverian the old English rat , the ...
... reasons obvious upon reflection , the competi- tion is often , if not generally , most severe betwen nearly related species when they are in contact , so that one drives the other before it , as the Hanoverian the old English rat , the ...
Otras ediciones - Ver todas
Términos y frases comunes
adaptation Agassiz appears argument atheistic auroch botanists Candolle Cloth common conclusion connection creation Darwin Darwin's theory Darwinian derivation descendants design in Nature direct divine doctrine doubt Drosera dysteleology equally evidence of design evolution existence explain extinct facts favor final causes force forms fossil genera geological glands Glyptostrobus gradation ground Hodge human hypothesis idea illustration individuals inference insects instance laws less living matter means ment mind miocene natural history natural selection natural theology naturalists nebular hypothesis object origin of species particular peculiar perhaps philosophical phyllotaxis physical plants and animals pollen present principle probably produced Prof propagated prove purpose question races reason regard remarks Review Sarracenia scientific seems sense Sequoia sexual reproduction sort structure succession suggest suppose Taxodium teleology tentacles tertiary theistic things thought tion tive trees variation varieties vary vegetable Westminster Reviewer whole
Pasajes populares
Página 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.
Página 3 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Página 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.
Página 6 - ROBERTSON, The late Rev. FW, MA—TM& and Letters of. Edited by the Rev. Stopford Brooke, MA I. Two vols., uniform with the Sermons. With Steel Portrait. Crown 8vo, "js.
Página 6 - Essays on Astronomy. A Series of Papers on Planets and Meteors, the Sun and Sun-surrounding Space, Stars and Star Cloudlets. By RA Proctor, BA With 10 Plates and 24 Woodcuts.
Página 276 - My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth.
Página 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.
Página 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...
Página 18 - Of the many twigs which flourished when the tree was a mere bush, only two or three, now grown into great branches, yet survive and bear the other branches; so with the species which lived during long-past geological periods, very few have left living and modified descendants.
Página 40 - Climate plays an important part in determining the average numbers of a species, and periodical seasons of extreme cold or drought seem to be the most effective of all checks.