Under the photographs was written: "Miss Diana Mayo, whose protracted journey in the desert is causing anxiety to a large circle of friends. Miss Mayo left Biskra under the guidance of a reputable caravan-leader four months ago, with the intention of journeying for four weeks in the desert and returning to Oran. Since the first camp nothing has been heard of Miss Mayo or her caravan. Further anxiety is occasioned by the fact that considerable unrest is reported amongst the tribes in the locality towards which Miss Mayo was travelling. Her brother, Sir Aubrey Mayo, who is detained in America as the result of an accident, is in constant cable communication with the French authorities. Miss Mayo is a well-known sports-woman and has travelled widely."

For a long time the Sheik studied the photographs silently, then with slow deliberation he tore the page out of the paper and rolled it up. "With your permission," he said coolly, and held it over the flame of the little lamp by the bedside. He held it until the burning paper charred to nothing in his hand and then flicked the ashes from his long fingers. "Henri has seen this?"

"Unquestionably. Henri reads all my papers," replied Saint Hubert, with a touch of impatience.

"Then Henri can hold his tongue," said the Sheik nonchalantly, searching in the folds of his waist-cloth for his case and lighting another cigarette with elaborate carelessness.

"What are you going to do?" asked Saint Hubert pointedly.

"I? Nothing! The French authorities have too many affairs on hand and too high an appreciation of Ahmed Ben Hassan's horses to prosecute inquiries in my direction. Besides, they are not responsible. Mademoiselle Mayo was warned of the risks she ran before she left Biskra. She chose to take the risks, et voila!"

"Will nothing make you change your mind?"

"I am not given to changing my mind. You know that. And, besides, why should I? As I told you before, she is content."

Saint Hubert looked him full in the face. "Content! Cowed is the better word, Ahmed."

The Sheik laughed softly. "You flatter me, Raoul. Do not let us speak any more about it. It is an unfortunate contretemps, and I regret that it distresses you," he said lightly; then with a sudden change of manner he laid his hands on the Vicomte's shoulders. "But this can make no difference to our friendship, mon ami; that is too big a thing to break down over a difference of opinion. You are a French nobleman, and I——!" He gave a little bitter laugh. "I am an uncivilised Arab. We cannot see things in the same way."