“You bet I remember!” exclaimed Joe. “I think I could even tell you most of the words. Why, there’s some of them in that book, right now!”

“Exactly,” replied Bob, nodding. “I remember them, too, and this must be the key to the code. My stars, what luck! Let’s see how close we can recall the words we caught, and then we’ll see if we can make sense of them with the help of this key.”

“I’ll tell you the words as I remember them, and you check me up,” suggested Joe, and this they accordingly did.

Between them they managed to get it straight, just as they had heard it, “Corn-hay-six-paint-water-slow-sick-jelly.”

“I think that’s right,” said Bob. “Anyway, we’ll see if it comes right with the key. You read the words, Joe, and I’ll find them in this notebook and you can write them down. Shoot the first one.”

“Corn,” said Joe.

Bob hunted rapidly down the columns of code words and their equivalents, and soon found the one he was after.

“Motor truck,” he read out.

“That sounds promising!” exclaimed Joe. “The next word I’ve got is ‘hay.’ What’s the answer to that?”

“Silk,” said Bob, after a shorter search this time.