. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). Chap. XIV.] GRADATION OF CHARACTERS. 131 must formerly have existed many species which presented every successive step between the wonderfully elongated tail-coverts of the peacock and the short tail-coverte of all ordinary birds; and again between the magnificent ocelli of the former, and the simpler ocelli or mere colored spots. Fig. 53.—Feather of Peacock, about two-thirds of natural size, carefully drawn by Mr. Ford. The tra
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). Chap. XIV.] GRADATION OF CHARACTERS. 131 must formerly have existed many species which presented every successive step between the wonderfully elongated tail-coverts of the peacock and the short tail-coverte of all ordinary birds; and again between the magnificent ocelli of the former, and the simpler ocelli or mere colored spots. Fig. 53.—Feather of Peacock, about two-thirds of natural size, carefully drawn by Mr. Ford. The transparent zone Is represented by the outermost white zone confined to the upper end of the disk. of other birds ; and so with all the other characters of the peacock. Let us look to the allied Gallinacea3 for any still-existing gradations. The species and sub-species of Polyplectron inhabit countries adjacent to the native land of ttie peacock; and they so far resemble this bird that. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Darwin, Charles, 1809-1882. New York : D. Appleton and Co.
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Keywords: ., boo, bookcentury1800, bookdecade1870, booksubjectnaturalselection
