. 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. BIRDS. 499 mark of the elliptic ornament {h fig. 59) having originally been thicker than the upper mark {c). Every step can be followed in the process of confluence and modification; and the black ring which sur- rounds the ball of the ocellus is unquestionably formed by the union and modification of tlie three black marks, b, c, dy of the elliptic ornament. The irregular zigzag black xnarks between the successi
. 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. BIRDS. 499 mark of the elliptic ornament {h fig. 59) having originally been thicker than the upper mark {c). Every step can be followed in the process of confluence and modification; and the black ring which sur- rounds the ball of the ocellus is unquestionably formed by the union and modification of tlie three black marks, b, c, dy of the elliptic ornament. The irregular zigzag black xnarks between the successive. 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
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Keywords: ., bookcentury1800, bookdecade1870, booksubjecthumanbeings, bookyear
