. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). 74 SEXUAL SELECTION: BIRDS. [Part Fig. 49.—Spathura Underwoodi, male and female (from Brehm). vol. xiii. 1854, p. 157; see also Mr. Wallace's much fuller account in voL xx. 1857, p. 412, and in bis Malay 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 orig


. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). 74 SEXUAL SELECTION: BIRDS. [Part Fig. 49.—Spathura Underwoodi, male and female (from Brehm). vol. xiii. 1854, p. 157; see also Mr. Wallace's much fuller account in voL xx. 1857, p. 412, and in bis Malay 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