238 THE EXPLORATION OF THE NIGER camp, where he summoned his relations and subjects to appear before him. He then told the story of what he pretended had happened, and everybody admired the devotion of Gherinecha. Then he called for the child — who had been brought in unperceived under the cloak of a slave — and presented him to the assembled crowds, saying, "Behold my heir and my successor. As my sister loves me more than my wife does, it is but just that after my death my sister's son should inherit my wealth and my rights." The Ben-Omia law has at least had the good result where it is enforced of preserving the purity of the Tuareg blood, for the son of a black slave woman would be and remain a slave all his life, no matter how great the power or how high the lineage of his father.

Amongst the Awellimiden, on the other hand, that is to say, amongst the three chief tribes, the Kel Kumeden, the Kel Ahara, and the Kel Tedjiuane, which dominate the rest of the Confederation, this system has not been observed, with the result that the complexions of the Awellimiden have been notably darkened by the admixture of negro blood.

The Tuaregs are extremely superstitious, and I have already alluded to the number of charms with which they deck themselves.

The Demons or Alchinen play a great part amongst them, and are looked upon as almost human. They are supposed to inhabit the mountains, camping on them, and living a life very much like that of the Tuareg tribes themselves. They have their own quarrels, their own wars, and they too make raids on each other. They are, however, endowed with the power of becoming invisible, and they come unseen to take and to drink the milk of the cows belonging to the Tuaregs. "Beware," say the Tuaregs,