Probably of far purer origin than the Berbers of the trans-Atlas portion of Morocco are those of Aït Yussi, Ghiata, and Beni Mgild, on the northern extremity of the same range, to the south and east of Fez. They seem to have lost none of their pristine fierceness, and to have adopted none of the manners and customs of their conquerors beyond their religion; for the brown tent in which they moved from place to place long before the Arab invasion is still found amongst them, and their traditions, pre-Arab, are still handed down from mouth to mouth. Inhabiting the immense forests of that district, they live a wild gipsy life, at war with all men, and paying no more than the most nominal obedience to the commands and laws of the Sultan. In the south, however, it is different; and when, after having reached Tafilet, I found myself in the Sultan’s camp, surrounded by Berber and Arab tribesmen, not only I, but natives of the country, often found it impossible to distinguish between them, so greatly did they resemble one another in feature and dress. In the other case, that of the northern Berbers, the type is quite distinct, the high cheek-bones and narrow eyes and reddish colouring distinguishing the Shleh from the Arab at once, and showing clearly his Hamitic origin. Imasin is a poor little place enough. The few scattered _ksor_ are all more or less in a state of ruin, and the gardens seemed uncared for and empty. Fording the river, we did not stop, but pushed on for another ten or twelve miles of desert, until a steep descent led us to the bed of the Wad Dads, at the point where the tribe of Aït Yahia is settled, and where the Imguna empties its stream into the larger river. The tribe of Aït Yahia are a division of the Berbers of Seddrat, who, like all the other tribes, are much split up. The junction of the Wad Imguna and Wad Dads forms a triangular plain about two and a-half miles across, shut in on all sides, except on the actual course of the rivers, by high cliffs, on the summit of which stand numerous _äudin_ or watch-towers. While the Wad Dads forms the base of the triangle, the Imguna bisects the plain, on which are to be found some four-and-twenty _ksor_, forming the district of Aït Yahia. The spot where the waters of the Imguna flow into the Dads is known as Tagnit bu Hammu. A few words must be said about the Wad Imguna. Rising on the southern slopes of the Atlas, near the snow-capped peak of Jibel Trekeddit, its upper valleys are inhabited by a small tribe called Aït Sakri. A few miles lower down the stream leaves the mountains, its banks at this spot being peopled by the Aït Ahmed, who in turn give place, as the river descends, to the tribe of Imguna, through whose territory for some twenty miles it flows, and from which it takes its name, or _vice versa_.