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. Darwinism; an exposition of the theory of natural selection, with some of its applications. Natural selection; Evolution. Ill DIAGRAM OF VARIATION 55. 5 10 15 FIG. 4.—Dolichonyx oryzivorus. 20 Males. 20. 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 Wallace, Alfred Russel, 1823-1913. London and New York, Macmillan and co.
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Keywords: ., bookauthorwallacealfredrussel18, bookcentury1800, bookdecade1880