I shall here subjoin a few general remarks upon the Nubians and their history;[61] my stay among them was too short to enable me to enter at length into the subject; and my observations were limited by my ignorance of the Nubian language, in which all conversation among the people, in my presence, was carried on. I have already observed, that Nubia is divided into two parts, called Wady Kenous, and Wady el Nouba (often named exclusively Saÿd); the former extending from Assouan to Wady Seboua, and the latter comprising the country between Seboua and the northern frontier of Dóngola. The inhabitants of these two divisions are divided by their language, but in manners they appear to be the same. According to their own traditions, the present Nubians derive their origin from the Arabian Bedouins, who invaded the country after the promulgation of the Mohammedan creed,[62] the greater part of the Christian inhabitants, whose churches I traced as far as Sukkot, having either fled before them or been killed; a few, as already mentioned, embraced the religion of the invaders, and their descendants may yet be distinguished at Tafa, and at Serra, north of Wady Halfa. The two tribes of Djowabere (جوابره) and El Gharbye (الغربيه), the latter a branch of the great tribe of Zenatye (زناتيه) took possession of the country from Assouan to Wady Halfa, and subsequently extended their authority over a great number of smaller tribes who had settled on the banks of the river at the period of the general invasion, among whom were the Kenous, a tribe from Nedjed and Irak.[63] The large tribe of Djaafere occupied the shores of the Nile from Esne to Assouan; a few families of Sherifs settled in the Batn el Hadjar; and a branch of the Koreysh possessed themselves of Mahass. For several centuries Nubia was occupied by these Arabs, who were at continual war with each other, in the course of which the kings of Dóngola had acquired so much influence over them, as to be able at last, to compel them to pay tribute. The Djowabere having nearly subdued the Gharbye, the latter sent an embassy to Constantinople, in the reign of the great Sultan Selym, to seek aid against their enemies, and they succeeded in procuring from the Sultan a body of several hundred Bosnian soldiers, under a commander named Hassan Coosy. By their means the Djowabere and people of Dóngola were driven out of Nubia, into the latter country; and to this day the more wealthy inhabitants of Dóngola derive their origin from the tribe of Djowabere. Some families of the Djowabere, however, remained peacefully behind, and their descendants, who are found chiefly at Derr and Wady Halfa, are still known by the name of their ancestors.