. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings; Sexual selection in animals; Sexual dimorphism (Animals); Sex differences. Fig. 60. Mg. 61 fig. 60. An ocellus in an intermedate condition between the elliptic ornament and the perfect ball-and-socket ocellus. Fig. 61, Portion near summit of one of the secondary wing-feathers, bearing perfect ball-and-socket ocelli, a. Ornamented upper part. b. Uppermost, imperfect ball-and-socket ocellus. (The shading above the white mark on the summit of the ocellus is here a little too dark.) c. Per
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Heredity; Human beings; Sexual selection in animals; Sexual dimorphism (Animals); Sex differences. Fig. 60. Mg. 61 fig. 60. An ocellus in an intermedate condition between the elliptic ornament and the perfect ball-and-socket ocellus. Fig. 61, Portion near summit of one of the secondary wing-feathers, bearing perfect ball-and-socket ocelli, a. Ornamented upper part. b. Uppermost, imperfect ball-and-socket ocellus. (The shading above the white mark on the summit of the ocellus is here a little too dark.) c. Perfect ocellus. ocelli (see again fig. 57) are plainly due to the breaking up of the somewhat more regular but similar marks between the elliptic ornaments. The successive steps in the shading of the ball-and- : socket ocelli can be followed out with equal clearness. ' The brown, orange and pale-leadened narrow zones which 1 border the lower black mark of the elliptic ornament can. 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 : A. L. Burt
Size: 1011px × 2472px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjecthumanbeings, bookyear
