"I'll give a big look tonight," Jack assured him; "and I'm almost sure I know just where I saw it. Father never allows papers to be destroyed under a month old, and it'll likely be up in the attic. Depend on me to get it for you, Bob." Just then the high school bell started to ring, and both lads had to hurry to enter in time. Bob braced up and tried to assume his ordinary look. His pride came to the rescue, for no boy likes to find himself an object of commiseration among his mates. As for Jack, he had to put the entire matter from his mind just then, having other things to occupy his attention. But every time he chanced to look toward Big Bob during that day's session it would be to find the other staring eagerly toward him; and a peculiar smile would creep across the big fellow's face when he caught Jack's eye. He was depending on this comrade to extricate him from the pit which his own carelessness had dug for his feet. And Bob was finding how good it was at such a crucial time in his life to have a reliable friend upon whom to lean. Again and again he doubtless told himself how lucky he was to be so favored. It may be said in passing that Jack did inaugurate a search among the latest pile of papers in the attic that night, and after a thorough hunt actually succeeded in locating the article he had mentioned. His wonderful memory had again served him in good stead, for it turned out to be in the very periodical he had had in mind. He even went to the trouble to drop over to give Big Bob the paper, marking with, a blue pencil the article just above the item in question. Any one reading this interesting account of something connected with the war must naturally have his attention arrested by the heading just below it, which ran: "How to make sure foreign letters reach their destination in spite of U-boats;" and then went on to tell how the gentleman in question sent out follow-up letters, exact duplicates of the original one. Bob was intensely interested. "I can fix it," he assured Jack, "so that this paper will be lying on the floor of the library. I'm glad you had it wrapped around that old sweater you were returning, because if father should ask me about it I can truthfully say I believe you brought it here in that way, and that I must have dropped it in the library; which would be just like my careless habits of the past, you know, Jack." Taken altogether Jack thought it a pretty good scheme. It might work, too, which would be a fine thing for everyone concerned; since Mr. Jeffries would be sure of having his letter reach its destination, and poor Bob could be relieved of at least a portion of the load that was weighing on his mind.