Then Frank turned to go, but hesitated for a moment or two, for the professor was running his eye over him critically.
“What is it?” said the younger man.
“I was looking to see if there is anything about you that might raise suspicion.”
“Well?”
“Nothing, my lad. I have had years of dealings with the people, and I should never take you for anything but a native of the desert.”
Frank nodded, and was mute again, as he walked out and across the path to where his horse was waiting the beautiful animal whinnying softly in token of recognition, and stretching out its velvety muzzle for the caress that was always given and enjoyed. The next minute the rider was in the saddle, with the Arab tossing its head and ambling gently beneath him.