He quotes Rev. C.L.F. Hainwell of the Church Missionary Society and Rev. J. Raban, his assistant, as his sources for stating that Yoruba was the country of the Akú, and that the Igbo and Kakunda came from the banks of the Nun. He knew of only five boys from Sierra Leone at that time in London, but suggests that Lecesne might know more about them. He also suggests that William Forster might like to see his observations on the Island of Bulama.