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II
PREFACE.
a disease, of humanity. This element of the work owes much to the continental scholars Réville, Goblet D'Alviella, and Pfleiderer.
In anthropological matters, I have been much indebted to Dr. Tylor's 'Primitive Culture' and Mr. J. G. Frazer's 'Golden Bough.' I should not omit to express my obligations to my friend Mr. J. Troup for assistance with the proofs and for a number of useful corrections and suggestions.