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ges to destroy those that do not come up to his pattern,--has no [knowledge] power of selecting according to internal variations,--can hardly keep his conditions uniform,--[cannot] does not select those best adapted to the conditions under which <the> form <?> lives, but those most useful to him. This might all be otherwise. {44} There is an article on the _vis medicatrix_ in Brougham's _Dissertations_, 1839, a copy of which is in the author's library. {45} This is the classification of selection into methodical and unconscious given in the _Origin_, Ed. i. p. 33, vi. p. 38. {46} This passage, and a similar discussion on the power of the Creator (p. 6), correspond to the comparison between the selective capacities of man and nature, in the _Origin_, Ed. i. p. 83, vi. p. 102. Sec. II. <ON VARIATION IN A STATE OF NATURE AND ON THE NATURAL MEANS OF SELECTION.> Let us see how far above principles of variation apply to wild animals. Wild animals vary exceedingly little--yet they are known as individuals{47}. British Plants, in many genera number quite uncertain of varieties and species: in shells chiefly external conditions{48}. Primrose and cowslip. Wild animals from different [countries can be recognized]. Specific character gives some organs as varying. Variations analogous in kind, but less in degree with domesticated animals--chiefly external and less important parts. {47} i.e. they are individually distinguishable. {48} See _Origin_, Ed. i. p. 133, vi. p. 165. Our experience would lead us to expect that any and every one of these organisms would vary if <the organism were> taken away <?> and placed under new conditions. Geology proclaims a constant round of change, bringing into play, by every possible <?> change of climate and the death of pre-existing inhabitants, endless variations of new conditions. These <?> generally very slow, doubtful though <illegible> how far the slowness <?> would produce tendency to vary. But Geolog<ists> show change in configuration which, together with the accidents of air and water and the means of transportal which every being possesses, must occasionally bring, rather suddenly, organism to new conditions and <?> expose it for several generations. Hence <?> we should expect every now and then a wild form to vary{49}; possibly this may be cause of some species varying more than others. {49} When the author wrote
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