“I can’t say, for he wouldn’t tell his name. I was walking along the fence around the aerodrome, and just as I neared the gates he popped out from behind a pile of boards, just as if he had been in hiding.”

“Did he ask for me?”

“Yes. I told him you were here quite regularly, and always evenings at the boarding house. The fellow looked peaked and scared, and backed away as soon as he saw someone coming down the street. He mumbled something about finding you.”

The young airman could not surmise who his strange visitor might be. He ransacked his mind, wondering if it could be some one of his old friends from his home town. Then he said:

“Describe him to me, Hiram, will you?”

“Why,” explained Hiram, “he was a trifle older than I am, and taller; yes, fully two inches taller. Oh, by the way, he wore a false mustache.”

“What’s that?” challenged Dave, half guessing Hiram was joking. But the narrator looked earnest enough. “You say he wore a false mustache?”

“Sure thing,” persisted Hiram.

“How did you know it was false?”

“Because it came partly off just as the boy turned his face away. Say, you couldn’t tell much about him. His face and hands were all grimed up, and he had his cap pulled way down over his eyes. It was funny, though, one thing.”