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Bolsche, W. Haeckel, His Life and Works. Trans, by J. McCabe. Phila- 

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Dendt, A. Outlines of Evolutionary Biology. New York, 1912. 



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Dbiesch, H. The Science and Philosophy of the Organism. Gifford Lec- 

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 *>■ — Drummond, H. Ascent of Man. New York, 1894. 



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