“Good heavens!” he cried. “Fellows, did you hear that?”
The other had heard it, of course. How could they help hearing it? And they were simply dumfounded.
“Why, it’s a double echo!” cried one.
“And it sounded even louder than your voice!” added another. “What on earth do you suppose it can be?”
Rogers didn’t know, but he hazarded a guess.
“It must have been where I was standing,” he said. “This is the place. I’ll try it again.”
Then he took another deep breath, while the rest waited anxiously.
“Hello!” he roared.
There was not a sound. Mark kept as still as a mouse, though he and his friends were ready to burst with laughter. The yearlings gazed at each other in amazement.
“Jove, I missed it that time!” exclaimed Rogers. “I wonder what’s the matter?”