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action actual adaptation American animals appears argument become believe called cause close Cloth comes common conclusion connection consider continue Darwin derivation direct doctrine doubt equally evidence evolution existence expected explain facts favor final follow force former forms glands ground hand human hypothesis idea illustration increase individuals inference insects instance kind known laws least leaves less limited living matter means mind movement natural selection naturalists object observation operation organic origin particular perhaps physical plants present principle probably produced prove question races reason referred regard region relations remains remarkable scientific secretion seems sense sexual reproduction side similar sort species structure succession suggest suppose theory things thought tion trees universe variation varieties vary vegetable whole
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 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.