Larry leaped from the wing-step, sent his sharp gaze rapidly around the enclosure and, of a sudden, gripped Dick’s arm so tightly that the plump youth winced and grew chilly with apprehension.

At once he saw Larry’s amazed, relieved expression and followed the older comrade’s eyes.

With an instant return of his old amused self he threw back his head and let out a deep howl of delight.

“Oh—ho-ho-ho-ha-ha! Oh, my!—ho-ho——”

“What’s the matter with you?” demanded Sandy. “Have you gone silly?”

“Oh—ho-ho! Suspicious Sandy!—ho-ho!”

Larry explained.

“You got us all worked up and worried,” he told Sandy, “with your suspicions. And all the time——”

“Ho-ho-ha-ha! All the t-time, we were like mice racing around a treadmill.” Dick had to speak between chuckles. “All the time we ran around in circles so fast we didn’t see the end of the cage. Sus—suspicious Sandy! Thinking we would be trapped and held for ransom! Ho, golly-me! Look around you, Sandy!”

Sandy looked.