The Mâz is a district of the Hassasna, and the Biaz is the stream known by the name of Foufet, that flows through their territory. The horses of the Oulad-Khaled are also famous for the same qualities. In reference to this tribe Sidi-Ahmed-Ben-Youssel has said: "The long locks and the long _djellals_ will lie seen in the midst of you to the day of the resurrection," thus eulogising their women and their horses. 8th. You say that people maintain against you that the horses of Algeria are not Arabs but Barbs. It is a theory that turns against its own authors, for the Barbs were originally Arabs. A well-known writer has said: "The Berbers inhabit the Mogheb. They are all sons of Kaïs-Ben-Ghilan. It is likewise stated that they spring from two great Hemiarite tribes, the Senahdja and the Kettama, who came into the country at the time of the invasion of Ifrikesh El Malik." According to both these opinions, the Berbers are decidedly Arabs. Historians, moreover, establish the descent of most of the Berber tribes from the Senahdja and the Kettama. The arrival of these tribes was anterior to Islam. Since the Mussulman invasion the number of Arabs who have emigrated into the Mogheb is beyond computation. When the Obeïdin [the Fatimites] were masters of Egypt, immense tribes passed into Africa, among others the Riahh, and spread themselves from Kaïrouan to Merrakesh [Morocco]. It is from these tribes that are descended the Algerian tribes of the Douaouda, the Aïad, the Mâdid, the Oulad-Mahdi, the Oulad-Iakoub-Zerara, the Djendel, the Attaf, the Hamïs, the Braze, the Sbeha, the Flittas, the Medjahar, the Mehal, the Beni-Aâmer, the Hamian, and many more. Without doubt the Arab horses were dispersed through the Mogheb in like manner with the Arab families. At the time of Ifrikesh-ben-Kaïf, the empire of the Arabs was all powerful. It extended as far west as the confines of the Mogheb, just as in the time of Shamar the Hemiarite it extended eastward to the frontiers of China, as it is related by Ben-Kouteïba in his book entitled "El Marif." It is quite true, however, that although the Algerian horses come of Arab stock, many have degenerated from their nobleness from being employed much too often in the plough, in carrying and drawing heavy loads, and in other kinds of labour, and from other causes which did not exist among the Arabs of the olden times. It is sufficient, they say, for a horse to have walked over ploughed land to lose something of his excellence, and by way of illustration they relate the following anecdote: "A man was riding one day, mounted on a thoroughbred, when he met his enemy also mounted on a noble courser. The one turned and fled, while the other gave chace. The latter was distanced, and despairing to overtake the former, cried out to him: "I demand of thee in the name of Allah, has thy horse ever been in the plough?" "He has ploughed for four days."