George Grenfell and the Congo: A History and Description of the Congo Independent State and Adjoining Districts of Congoland, Together With Some Account of the Native Peoples and Their Languages, the Fauna and Flora; And Similar Notes on the Cameroons and the Island of Fernando Pô, the Whole Founded on the Diaries and Researches of the Late Rev. George Grenfell, B.M.S., F.R.G.S.; And on the Records of the British Baptist Missionary Society; And on Additional Information Contributed by the Author, by the Rev. Lawson Forfeitt, Mr. Emil Torday, and Others