To the Americans, these people were of great interest. The men and women dressed almost alike, in a long, white robe that reached to the ankles. A tight-fitting cloth was wound around the head, and the back of the neck was protected from the sun by a black veil. They were of a naturally swarthy complexion, which was still further darkened by the fierce desert heat.

“Not very pleasant to look at,” said Bob to his chum. “But they sure are giving us a hearty welcome.”

“That’s probably because they’re so unused to seeing strangers,” Joe remarked. “Nearly all friendly natives are that way.”

The Arabs led the explorers into the main part of the village, where there was a large open space before the chief’s, or sheik’s, hut. Suddenly the head native stopped and pointed to a distant large rock. He babbled animatedly to Tishmak and Fekmah, whose faces took on a look of disgust.

“Sheik say over there is a place where they bury those guilty of witchcraft,” Fekmah explained to the Americans. “They put to a terrible death, and then their bones taken over there.”

Mr. Holton shook his head repulsively.

“Ignorance is the root of evil,” he said. “These people are even worse off than the Negroes of the Congo. They so infrequently come into contact with civilization that they have degenerated into a state of almost nothingness.”

“With even more respect for Fekmah and Tishmak, the Arabs in many remote sections of the Sahara are a bloodthirsty, treacherous, and immoral people,” put in Dr. Kirshner. “They do not at all compare with their brothers in Algiers and other places nearer the coast.”

Fekmah nodded.

“Praise be to Allah that I was not born here,” he muttered.