. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). Fig. 58.—Portion of one of the Secondary wing-feathers near to the body ; show ing the so-called elliptic ornaments. The rio;ht-hand figure is given merely as a diagram for the sake of the letters of reference. A, B, C, etc. Rows of spots runnins: down to and forming the elliptic ornaments. b. Lowest spot or mark in row B. c. The next succeeding spot or mark in the same row. d. Apparently a broken prolongation of the spot c in t
. The descent of man, and selection in relation to sex. Evolution; Natural selection; Sexual selection in animals; Human beings -- Origin; Sexual dimorphism (Animals). Fig. 58.—Portion of one of the Secondary wing-feathers near to the body ; show ing the so-called elliptic ornaments. The rio;ht-hand figure is given merely as a diagram for the sake of the letters of reference. A, B, C, etc. Rows of spots runnins: down to and forming the elliptic ornaments. b. Lowest spot or mark in row B. c. The next succeeding spot or mark in the same row. d. Apparently a broken prolongation of the spot c in the same row B. always more or less distinct from it, there is another black mark (d). This mark is generally sub-triangular and ir- regular in shape, but in the one lettered in the diagram is unusually narrow, elongated, and regular. It apparently consists of a lateral and broken prolongation of the mark (c), as I infer from traces of similar prolongations from the succeeding upper spots ; but I do not feel sure of 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
