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action actual adaptation American animals appears argument become believe bring called cause close Cloth common conclusion connection consider continued course Darwin derivation direct distinct doctrine doubt effect equally evidence evolution existence expected explain facts favor final follow force forms genera ground hand human hypothesis idea illustration increase individuals inference insects instance kind known laws least leaves less living material matter means mind natural selection naturalists object observation operation organic origin particular perhaps period philosophical physical plants present principle probably produced prove question races reason referred regard remains remarks reviewer scientific seems sense side similar sort species structure succession suggest suppose tertiary theory things thought tion trees true types variation varieties vary vegetable volume whole
Página 129 - 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 274 - My substance was not hid from thee, when I was made in secret, and curiously wrought in the lowest parts of the earth.
Página 16 - ... of the former and present buds by ramifying branches may well represent the classification of all extinct and living species in groups subordinate to groups. 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 16 - 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 102 - 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 102 - ... 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.