222 THE EXPLORATION OF THE NIGER limbs are very finely moulded, and they walk with a slow dignity all their own, raising their feet rather high from the ground much as an ostrich does, a mode of progression which is probably the reason for their habit of leaning on their spears as they advance.

The most striking peculiarity of the Tuareg costume is the veil, called the litJiam in Arabic, and the tagelmust in Tamschek, which covers the face, leaving only the eyes visible. It consists of a band of stuff, generally black, which goes round the head like a turban to begin with, and then passes over the mouth and nose, coming round a third time across the forehead, and looking rather like a visor.

The tribe to which a Tuareg belongs is shown by his tagelmust. A well-bred Amacher never takes it off, not even to eat or sleep, and the negroes of the riverside have adopted the custom in imitation of their masters. Their veils are, however, generally white, as are also those of Tuaregs who are not rich enough to buy the lustrous black stuffs from Haussa, used by the well-to-do.

The veil seems to have been originally adopted as part of the Tuareg costume on hygienic grounds, for in the long wanderings of the tribes amongst the sand of the deserts it protects the respiratory organs. By degrees, however, this tagelmust grew to be considered a sign of the modesty of the wearer, and to show the face became a breach of etiquette.

Strange to say, the women do not hide their faces, a very noteworthy difference this between Mahommedans, whose females are always veiled, and Tuaregs, amongst whom it is the men who thus disguise their features. To make up for this, however, if a Tuareg woman wishes to show great respect to any one she is talking to, she covers her mouth with a piece of her robe.