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ignorant of the matters which it most behooves us to know, and therefore I cannot occupy myself with them. I prefer to set them all aside, and, since knowledge is unattainable, to occupy myself only with folly.”

“It is a point of view I do not sympathise with,” said Arthur.

“Yet I cannot be sure that it is all folly,” pursued the Frenchman reflectively. He looked at Arthur with a certain ironic gravity. “Do you believe that I should lie to you when I promised to speak the truth?”

“Certainly not.”

“I should like to tell you of an experience that I once had in Alexandria. So far as I can see, it can be explained by none of the principles known to science. I ask you only to believe that I am not consciously deceiving you.”

He spoke with a seriousness which gave authority to his words. It was plain, even to Arthur, that he narrated the event exactly as it occurred.

“I had heard frequently of a certain sheikh who was able by means of a magic mirror to show the inquirer persons who were absent or dead, and a native friend of mine had often begged me to see him. I had never thought it worth while, but at last a time came when I was greatly troubled in my mind. My poor mother was an old woman, a widow, and I had received no news of her for many weeks. Though I wrote repeatedly, no answer reached me. I was very anxious and very unhappy. I thought no harm could come if I sent for the