“I—I dropped Ned’s knife,” replied Bart. “I had borrowed it.”

“And Frank’s handkerchief?”

“I—I didn’t have that,” and Bart looked confused.

“I think I can guess how it was,” said Mr. Long at length. “You were all four after my collection, and——”

“Not all four!” interrupted Bart. “Fenn wasn’t there. You see we were playing a joke on him,” the lad went on, in a burst of confidence, realizing that it was useless to try to shoulder all the blame. “Ned, Frank and I came in here Friday night and got the things. I knew I had lost Ned’s knife, but I didn’t think I’d dropped it here. But Fenn wasn’t along. We took the things to his house, and put them in the pen with his reptiles. He is making a collection.”

“So I understand,” remarked Mr. Long. “Therefor I have a proposal to make. It is barely possible that in gathering up the toads, alligators and turtles from my cabinet that you boys picked up the bracelet with them. You may have dropped it in the place where Fenn keeps his collection. Perhaps if you go there and look you will find it, and also the missing turtle, which I value highly. But, of course, the bracelet is more valuable, and as it was a birthday present to Mrs. Long she will feel the loss very much. Will you kindly go and look? I am sure Mr. McCloud will excuse you.”

“I’ll be glad to make a search!” exclaimed Bart, eagerly. “Perhaps if Ned and Frank——”

“Just what I was about to propose,” interrupted the instructor. “I’ll request the principal to let you four boys leave your classes this morning, to make a hunt for the missing bracelet—and the turtle. Don’t forget that.”

“I’m—I’m very sorry—sorry we disturbed your collection, Professor Long,” stammered Bart, “but I know we never touched, or saw, the diamond bracelet.”

“I know you didn’t mean to take the bracelet,” went on Mr. Long, a bit stiffly. “Of course it was a foolish, and, at the same time, a risky trick to play, and, while I believe you had no intention of keeping the bracelet, I cannot but believe that in some way you removed it from the cabinet, either in catching up one of the reptiles hurriedly, or otherwise. I shall be glad to talk with Ned and Frank. But now I suggest that you go to Fenn’s house and make a search.”