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By: Spitzka, Edw AnthonyType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 47Series:Issue: 188Date: 1908Page Range: 39--50Publication Info: Philadelphia, American Philosophical Society,Subjects:
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By: Spitzka, Edw AnthonyType: ArticleIn: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledgeVolume: 47Series:Issue: 188Date: 1908Page Range: 51--58Publication Info: Philadelphia, American Philosophical Society,Subjects: