Grant emerged from the cave, his manner showing how excited he was. He walked rapidly and his hands shook with nervousness. He carried the piece of parchment that had become so familiar to the four boys.
“He must have meant the code,” whispered Fred to George.
“He couldn’t have solved it,” said George in a low voice. “How could he?”
“I don’t know. At any rate he may have had an idea.”
Grant advanced rapidly towards the spot where his companions were grouped and seated himself in front of them.
“What’s going on, Grant?” demanded John curiously.
“Just a minute and I’ll show you something,” and he spread the code out on the ground while the rest of the little party peered eagerly over his shoulder.
“Now, first of all,” began Grant, “you all know what this is.”
“It’s a combination to a safe,” said George readily.
“Keep quiet, Pop,” exclaimed Fred. “Give him a chance.”