Page:Origin of Species 1859 facsimile.djvu/290

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278
Chap. VIII.
HYBRIDISM.

cation by the selection of mere external differences, and not of differences in the reproductive system. In all other respects, excluding fertility, there is a close general resemblance between hybrids and mongrels. Finally, then, the facts briefly given in this chapter do not seem to me opposed to, but even rather to support the view, that there is no fundamental distinction between species and varieties.