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of the slight analogous differences between species. I might have adduced for this same purpose the differences between the races of man, which are so strongly marked; I may add that some .. light can apparently be thrown on ... these differences, .. through sexual selection of a particular kind, but without .. entering on full details my reasoning would appear frivolous.
Utilitarian Doctrine how far true: Beauty how acquired .
The foregoing remarks lead me to say a few words on the protest lately made by some naturalists, against the utilitarian doctrine that every detail of structure has been produced for the good of its possessor. They believe that .. many structures have been created for beauty in the eyes of man, or, as already discussed, for the sake of mere variety. Such doctrines, if true, would be absolutely fatal to my theory. Yet I fully admit that many structures are now of no direct use to their possessors, and may never have been of any use to their progenitors. No doubt, as recently remarked, the definite action of changed conditions, correlated variation, and reversion have all produced their effects. But the most important consideration is that the chief part of the organisation of every living creature is simply due to inheritance; and consequently, though each assuredly is well fitted for its place in nature, many structures now have no direct relation to existing habits of life. Thus, we can hardly believe that the webbed feet of the upland
of the slight analogous differences between species. I might have adduced for this same purpose the differences between the races of man, which are so strongly marked; I may add that some little light can apparently be thrown on the origin of these differences, chiefly through sexual selection of a particular kind, but without here entering on copious details my reasoning would appear frivolous.
The foregoing remarks lead me to say a few words on the protest lately made by some naturalists, against the utilitarian doctrine that every detail of structure has been produced for the good of its possessor. They believe that very many structures have been created for beauty in the eyes of man, or for mere variety. This doctrine, if true, would be absolutely fatal to my theory. Yet I fully admit that many structures are of no direct use to their possessors. Physical conditions probably have had some little effect on structure, quite independently of any good thus gained. Correlation of growth has no doubt played a most important part, and a useful modification of one part will often have entailed on other parts diversified changes of no direct use. So again characters which formerly were useful, or which formerly had arisen from correlation of growth, or from other unknown cause, may reappear from the law of reversion, though now of no direct use. The effects of sexual selection, when displayed in beauty to charm the females, can be called useful only in rather a forced sense. But by far the most important consideration is that the chief part of the organisation of every being is simply due to inheritance; and consequently, though each being assuredly is well fitted for its place in nature, many structures now have no direct relation to the habits of life of each species. Thus, we can hardly believe that the webbed feet of the upland