. Darwinism; an exposition of the theory of natural selection, with some of its applications. Natural selection; Evolution. 58 DARWINISM 75 10 15 20 25 30 FIG. 6.—Cardinalis virginiamis. 31 Males,. 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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