The Mauritanian Basin and Coast -The Beydan tribes in Wali, and finally Mahmoud, born around 1899, and Mokhtar, born Massouda, married to the chief of Oulad el Dhib; and he is assisted in leadership by his brother Hadrami, born around 1864, who appears culturally more mature than him. The tribe today appears completely united and well-behaved, and we should attribute this to the efforts of Colonel Mango, to whom we should also attribute the political pacification of the Sahel region; at the time he took power following the occupation of the province in 1912, the tribe was deeply divided, with a fierce dispute erupting between its leader and his cousin Jed over the highly important issue of succession after the death of the former chief Ali. The tribe is divided into four factions: El A'graf, El Zmarik, Ladem, and El Drakla, who declared their rebellion against their leader and moved to other pastures; on the other hand, conflicts with Mechthouf became more intense, and Colonel Mango nevertheless managed to restore internal peace and settle the dispute with Mechthouf, as we have seen. The old contribution that Oulad Mohamed used to pay has now been abolished and converted into a subsidy of six thousand francs, paid from the local budget (decision of June 12, 1917) to Ali Mahmoud, chief of Mechthouf. Oulad Mohamed were greatly pleased with this decision and expressed it by paying a French administration tax equal to double what they had paid in previous years. Having been purely a desert tribe owning only camels, this tribe now owns abundant herds of cattle, sheep, and horses, as they are horsemen who have settled in the south. In contrast, they own no more than about a thousand camels, half of which are and the rest are distributed among the other factions, especially El Cherfa and El A'graf. The tribe grazes for most of the year between the lands of Kouthb, El Nouara, and Sekoloua. At the beginning of the rainy season (end of June), they ascend north to Kouch, where they drink from the pools staying for a long time near the pools of Koussa and Fedra; in December, they return south again, and reside in their usual grazing lands during the dry season. 2 - Distribution Oulad Mohamed includes "one" in ten factions, which are: (d) El Zmarik. (a) Oulad El A'qas. (e) Lemalish. (b) Oulad Alloul. (f) Torgalt. (c) Oulad el Dhib.