Archive image from page 452 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele1889xdarw Year: 1889 Chai'. N1Y Gradation of Characters. 431 If we admit the principle of gradual evolution, there must formerly have existed many species which presented every suc- cessive step between the wonderfully elongated tail-coverts of the peacock and the short tail-coverts of all ordinary birds; and again between the magnificent ocelli of the former, and the simpler ocelli or mere coloured spots on other birds; and so with all the other characters of the peaco
Archive image from page 452 of The descent of man, and. The descent of man, and selection in relation to sex descentofmansele1889xdarw Year: 1889 Chai'. N1Y Gradation of Characters. 431 If we admit the principle of gradual evolution, there must formerly have existed many species which presented every suc- cessive step between the wonderfully elongated tail-coverts of the peacock and the short tail-coverts of all ordinary birds; and again between the magnificent ocelli of the former, and the simpler ocelli or mere coloured spots on other birds; and so with all the other characters of the peacock. Let us look to the allied Gallinaceae for auy still-existing gradations. The species and Fig. 54. Feather of Peacock, about two-thirds of natural size, drawn ' y Mr. Ford. The transparent zone is represented by the outermost white zone, confined to the upper end of the disc. -> sub-species of Polyplectron inhabit countries adjacent to the native land of the peacock; and they so far resemble this bird that they are sometimes called peacock-pheasants. I am also in- formed by Mr. Bartlett that they resemble the peacock in their voice and in some of their habits. During the spring the males, as previously described, strut about before the comparatively plain-coloured females, expanding and erecting their tail and
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