The boy turned a troubled eye on the girl. "I did it on a dare," he said after a pause.

A rosy flush had replaced her pallor. "That isn't the whole truth, Mr. McIver," she said. "There was a wager, and a lot of teasing, and talk about a kiss. It sounds so silly now, but it was all in fun. I didn't expect him to do it. And, oh! how sorry I am!"

"The question is, McIver," said the boy, "how on earth am I to get it back."

"That's the easiest part," I said. "In fact, it is already back." I paused to enjoy their pleased surprise. "And if I mistake not here are the two gentlemen that did it." The doorbell had rung and I stepped out to admit Dorland and the professor.

The next 15 minutes was a medley of questions, of explanations, of promises to keep mum and of expressions of heartfelt thanks from the young couple. The professor was the only one who thought it incumbent to scold them for a silly prank and to point out the serious danger in which they had been involved. It sobered them, and at the same time it made them realize what a tremendous service I had done them.

One point puzzled Dorland. When we had left the house and parted from the professor, he asked me:

"How on earth did you know that pin was Miss Anstey's?"

"Had it been a thistle design," I said, "I should have begun a search for that 'bonnie sweet lass, the Maid o' Dundee."

"I don't exactly see," he ejaculated.

"The maple leaf, my son, is the national emblem of Canada."