“Perhaps there are,” Fred admitted. “Go ahead, Grant.”

Grant made some calculations that his comrades could not follow before he replied to Fred’s remark. His friends eyed him curiously.

“Suppose we put the letter e wherever the number five occurs,” he said at length.

“What are you going to do that for?” demanded George, now very much interested in the experiment Grant was conducting.

“Never mind why,” exclaimed Grant. “Do as I say.”

“Give me a sheet out of your diary, Pop,” said Fred. “I’ll do the figuring.”

“Are you going to write it all down?” inquired George.

“Shall I, Grant?”

“Put it all down. We’ll go slowly, but we’ll do it right.”

“All right,” exclaimed Fred. “Here goes,” and he wrote as follows, substituting the letter for the number every time he came to it: