Italic text is denoted by _underscores_. For more transcriber’s notes, please go to the end of this e-book. It was while engaged in the preparation of a book--still unfinished--on the Sway of Friendship in the World’s Forces, that I came upon facts concerning the primitive rite of covenanting by the inter-transfusion of blood, which induced me to turn aside from my other studies, in order to pursue investigations in this direction.…
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