Common both to Sudanese and Bantus, especially about the western borderlands (Upper Guinea, Cameruns, etc.) is the "drum-language," which affords a striking illustration of the Negro's musical faculty. "Two or three drums are usually used together, each producing a different note, and they are played either with the fingers or with two sticks. The lookers-on generally beat time by clapping the hands. To a European, whose ear and mind are untrained for this special faculty, the rhythm of a drum expresses nothing beyond a repetition of the same note at different intervals of time; but to a native it expresses much more. To him the drum can and does speak, the sounds produced from it forming words, and the whole measure or rhythm a sentence. In this way, when company drums are being played at an _ehsadu_ [palaver], they are made to express and convey to the bystanders a variety of meanings. In one measure they abuse the men of another company, stigmatising them as fools and cowards; then the rhythm changes, and the gallant deeds of their own company are extolled. All this, and much more, is conveyed by the beating of drums, and the native ear and mind, trained to select and interpret each beat, is never at fault. The language of drums is as well understood as that which they use in their daily life. Each chief has his own call or motto, sounded by a particular beat of his drums. Those of Amankwa Tia, the Ashanti general who fought against us in the war of 1873-4, used to say _P[)i]r[)i]h[=u]h_, hasten. Similar mottoes are also expressed by means of horns, and an entire stranger in the locality can at once translate the rhythm into words[142]." Similar contrasts and analogies will receive due illustration in the detailed account here following of the several more representative Sudanese groups. WEST SUDANESE. _Wolofs._ Throughout its middle and lower course the Senegal river, which takes its name from the Zenaga Berbers, forms the ethnical "divide" between the Hamites and the Sudanese Negroes. The latter are here represented by the Wolofs, who with the kindred _Jolofs_ and _Serers_ occupy an extensive territory between the Senegal and the Gambia rivers. Whether the term "Wolof" means "Talkers," as if they alone were gifted with the faculty of speech, or "Blacks" in contrast to the neighbouring "Red" Fulahs, both interpretations are fully justified by these Senegambians, at once the very blackest and amongst the most garrulous tribes in the whole of Africa. The colour is called "ebony," and they are commonly spoken of as "Blacks of the Black." They are also very tall even for Negroes, and the Serers especially may claim to be "the Patagonians of the Old World," men six feet six inches high and proportionately muscular being far from rare in the coast districts about St Louis and Dakar.