81개의 결과 중 1 - 5개
468) has ably given the arguments for and against the hypothesis of the
development and modification of species : ho seems to me to lean towards the
side of change. The Vestiges of Creation appeared in 1844. In the last or tenth
and much ...
... by some miasma, have arisen and spread over the world, so at certain periods
the germs of existing species may have been chemically affected by
circumambient molecules of a particular nature, and thus have given rise to new
In the four succeeding chapters, the most apparent and gravest difficulties on the
theory will be given : namely, first, the difficulties of transitions, or in
understanding how a simple being or a simple organ can be changed and
perfected into a ...
... so will some animals and plants withstand domestication or cultivation, and
vary very slightly — perhaps hardly more than in a state of nature. A long list
could easily be given of " sporting plants ; " by this term gardeners mean a single
bud or ...
In monstrosities, the correlations between quite distinct parts are very curious;.
and many instances are given in Isidore Geoffroy St. Hilaire's great work on this
subject. Breeders believe that long limbs are almost always accompanied by an ...
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