The system of phonography employed in the Vocabulary — which also contains the analysis or derivation of each several word — is that adopted by this Society in its Rules for reducing unwritten languages to alphabetical writing in Roman characters, with reference especially to the languages spoken in Africa, appended to the Church Missionary Report for 1848-49, in which it has not been attempted to form a perfect phonetic system, but one which practical experience suggests as the most expe dient under all the circumstances of the case. A sum mary of it, as far as it bears on the present subject, will be found at p.