. Darwinism; an exposition of the theory of natural selection, with some of its applications. Natural selection; Evolution. 58 DARWINISM 1 5 10 15 20 25 30. 10 15 20 25 Fig, 6.—Cardinalis virginianus. 31 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, Macmillan and Co. ; New York, Macmillan Co.

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