There is an excellent bibliography by Falconer Madan (1887).
A large part of the foreign trade is in their hands, and at the season of the sheep-shearing their agents and representatives are found everywhere among the Bedouins and Madan Arabs of the interior, purchasing the wool and selling various commodities in return.
Here, as in the neighbouring Darab district, villages situated in the hills are called madan (mine), and some travellers have in their itineraries indicated a mine in localities where there is none.
At such settlements the river is lined with gardens and plantations of palms. The greater part of the region, however, even along the river shores, is inhabited only by roaming Bedouin or halfsavage Madan Arabs (see Irak).