This suggestion of Miss Kingsley's gave me no new thought; it only sharpened a desire I had hopelessly cherished for some years. In my many missionary occupations--translation of the Scriptures, and other duties--I had never found the strength, when the special missionary daily work was done, to sit down and put into writing the mass of material I had collected as to the meaning and uses of fetiches. Nor did I think it right for me to take time that was paid for by the church in which to compile a book that would be my own personal pleasure and property. Impressed with this idea, on my fourth furlough to America in 1899, I confided my wish to a few personal friends, telling them of my plan, not indeed ever to give up my life-work in and for Africa, but to resign from connection with the Board; and, returning to Africa under independent employ and freed from mission control, but still working under my Presbytery, have time to gratify my pen. One of these friends was William Libbey, D. Sc., Professor of Physical Geography and Director of the E. M. Museum of Geology and Archæology in Princeton University. Without my knowledge he subsequently mentioned the subject to his university friend, Rev. A. Woodruff Halsey, D.D., one of the Secretaries of the Board of Foreign Missions. Dr. Halsey thought my wish could be gratified without my resigning from the Board's service. In November, 1899, the following action of the Board was forwarded to me: "November 20th, 1899. In view of the wide and varied information possessed by the Rev. Robert H. Nassau, D.D., of the West Africa Mission, regarding the customs and traditions of the tribes on the West Coast, and the importance of putting that knowledge into some permanent form, the Board requested Dr. Nassau to prepare a volume or volumes on the subject; and it directed the West Africa Mission to assign him, on his return from his furlough, to such forms of missionary work as will give him the necessary leisure and opportunity." On my return to Africa in 1900, I was located at Batanga, one hundred and seventy miles north of Gabun, and was assigned to the pastorate of the Batanga Church, the largest of the twelve churches of the Corisco Presbytery, with itineration to and charge of the sessions of the Kribi and Uběnji churches. During intervals of time in the discharge of these pastoral duties my recreation was the writing and sifting of the multitude of notes I had collected on native superstition during the previous quarter of a century. The people of Batanga, though largely emancipated from the fetich practices of superstition, still believed in its witchcraft aspect. I began there to arrange the manuscript of this work. There, more than elsewhere, the natives seemed willing to tell me tales of their folk-lore, involving fetich beliefs. From them, and also from Mpongwe informants, were gathered largely the contents of Chapters XVI and XVII.