The best measure of the heterogeneousness of the Sierra Leone population is to be found in Mrs. Kilham's vocabularies. That lady collected, at Free Town, specimens of thirty-one African tongues, from Negroes then and there resident. Of these-- A. Eight belonged to the Mandingo group, _viz._, Mandingo Proper, Susu, Bambara, Kossa, Pessa, Kissi, Bullom, and Timmani. B. Two were dialects of the Grebo (Kru): the Kru, and the Bassa. C. Two were Fanti: the Fanti and the Ashanti, closely allied dialects. D. Two were Dahoman: the Fot, and the Popo. E. Two Benin: the Benin Proper, and the Moko, languages of a tract but little known. F. One Wolof, from the Senegal. G. Eight from the parts between the rivers Formosa and Loango, _viz._, the Bongo, the Ako, the Ibu, the Rungo, the Akuonga, the Karaba, the Uobo, the Kouri. H. One from the river Kongo, _i.e._, the Kongo properly so-called. I. Two from the Lower Niger, but, still separated from the coast--the Tapua (Nufi) and Appa. K. Three from the widely-spread nations of the interior--the Fulah, the Haussa, and the Bornu. I do not say that all Mrs. Kilham's specimens represent mutually unintelligible tongues; probably they do not. At the same time, as several decidedly different languages are omitted, the list understates, rather than exaggerates, the number of the divisions and subdivisions of the western African populations, as inferred from the divisions and subdivisions of the language. Thus, no samples are given of the-- 1. _Sereres._--Pastoral tribes about Cape Verde. 2. _Serawolli._--On the Middle Senegal, different, in many respects, from the Sereres, the Wolofs, and the Fulahs; nations with which they are in geographical contact. 3. _The Feloops._--Between the Gambia and Cacheo, along the coast. 4. _The Papels._--South of the Cacheo; and also coastmen. 5. _The Balantes._--Coast-men to the south of the Papels. 6. _The Bagnon._--Conterminous with the Feloops of the river Cacheo. 7. _The Bissago._--Fierce occupants of the islands so-called. 8. _The Naloos._--On the Nun and river Grande. 9. _The Sapi._--Conterminous with the Naloo, and like all the preceding tribes, from the Feloops downwards, pre-eminently rude, fierce, intractable, and imperfectly known. Southward, the unrepresented languages are equally numerous--especially for the Ivory Coast, and for the Delta of the Niger. Of these I shall only notice one--the Vey. The settlement with which the tribes speaking the Vey language is in contact is one of which the tongue is English, but not the political relations. It is the American free Negro settlement of Liberia.