“Nope,” came the cheerful hail. “Old Auntie’s just wanted to take a rest. She takes ’em once in a while. She’s all right now. We were getting ready to go up when we heard you yell.”

With this reassuring information the speaker stepped forward, halting a few paces from the newcomers. Close survey of him showed a grinning, boyish face, looking out from a close-fitting hood. It was lighted by two dancing blue eyes, bluer by reason of their heavily marked brows and thick black lashes.

“Gee!” exploded Jimmy. “We thought it was a sure-enough smash-up! Some plane you’ve got there. Mind if we take a look——”

He broke off abruptly, his gray eyes widening. From the elevator of the motionless plane a stooping figure suddenly straightened up. For an instant Jimmy was under the impression that he was seeing double. “Why—what——” he gasped, as he stared stupidly at this second youth, so identically like the first, even to his wide grin.

“Twins!” Bob’s quick brain had instantly grasped the situation. “Well, I’ll be jiggered!”

“How did you guess it?” laughed the youth they had first addressed. “You don’t think we look alike, do you?”

“Not enough so that I’d ever be able to tell you apart,” retorted Bob, his black eyes twinkling.

“Oh, that’s easy enough when you know us,” was the jesting assurance of the other twin. “We never have any trouble about it ourselves. I wouldn’t have to be a detective to spot where you fellows live. How’s Camp Sterling, anyway?”

“It’s there yet. At least, it was still there at one o’clock.” Bob’s voice quivered with amusement. His face betrayed a lively curiosity, which was plainly reflected on the features of his companions. To suddenly come upon an aeroplane taking a rest in a hollow and presided over by a couple of youngsters, so identical in every respect, even to a wide, good-natured grin, was adventure, to say the least.