"This great family of languages--if the Mpongwe dialect may be taken as a specimen--is remarkable for its beauty, elegance, and perfectly philosophical arrangements, as well as for its almost indefinite expansibility. In these respects it not only differs essentially and radically from all the dialects north of the Mountains of the Moon, but they are such as may well challenge a comparison with any known language in the world."[89] The dialects of Northern Africa are rough, irregular in structure, and unpleasant to the ear. The Mpongwe we are inclined to regard as the best of all the dialects we have examined. It is spoken, with but slight variations, among the Mpongwe, Ayomba, Oroungou, Rembo, Camma, Ogobay, Anenga, and Ngaloi tribes. A careful examination of several other dialects leads us to suspect that they, too, sustain a distant relationship to the Mpongwe. Next to this remarkable language comes the Bakalai, with its numerous dialectic offspring, scattered amongst the following tribes: the Balengue, Mebenga, Bapoukow, Kombe, Mbiki, Mbousha, Mbondemo, Mbisho, Shekiani, Apingi, Evili, with other tribes of the interior. The two families of languages we have just mentioned--the Mpongwe and the Bakalai--are distinguished for their system and grammatical structure. It is surprising that these unwritten languages should hold their place among roving, barbarous tribes through so many years. In the Mpongwe language and its dialects, the liquid and semi-vowel _r_ is rolled with a fulness and richness harmonious to the ear. The Bakalai and its branches have no _r_; and it is no less true that all tribes that exclude this letter from their dialects are warlike, nomadic, and much inferior to the tribes that use it freely. The Mpongwe language is spoken on each side of the Gabun, at Cape Lopez, and at Cape St. Catharin in Southern Guinea; the Mandingo, between Senegal and the Gambia; and the Grebo language, in and about Cape Palmas. It is about twelve hundred miles from Gabun to Cape Palmas, about two thousand miles from Gabun to Senegambia, and about six hundred miles from Cape Palmas to Gambia. It is fair to presume that these tribes are sufficiently distant from each other to be called strangers. An examination of their languages may not fail to interest.