DARWIN AND AFTER DARWIN. An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions. Three Vols., $4.00. Singly, as follows:
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AN EXAMINATION OF WEISMANNISM.
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THOUGHTS ON RELIGION.
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RIBOT. TH.
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MACH, ERNST.
THE SCIENCE OF MECHANICS.
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POPULAR SCIENTIFIC LECTURES.
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