"Do you mean that old blue box that stood in the back of the garret?" questioned Dave. "That's the one, David. I don't think the books in it are of very great value, but they might as well be added to the library here," went on the old professor. The Wadsworth library comprised many hundreds of volumes, and was a source of great pride to Professor Potts, who had spent many days in classifying the books and getting out a private catalogue. To please the old gentleman, Mr. Wadsworth had, from time to time, added various books and pamphlets which he might not otherwise have purchased. Since Dave and Caspar Potts had left the old farm, the place had been leased to another party, but now it was unoccupied, and the cottage and stable were locked up. "Looks natural," remarked Dave, as he stood on the tiny piazza of the cottage and looked around on the familiar scene. Then his thoughts went back to the past. What tremendous changes had taken place since he had left that home! He had found a father, a sister, and an uncle, and had made a host of friends. Not only that; he was rich, and had received a good education, and was on the fair road to success. "David!" It was Caspar Potts who spoke, and his voice trembled. "How different it is from what it used to be! Certainly your folks and Mr. Wadsworth have been great friends of mine," and the old gentleman blinked away the tears that stood in his mild eyes. Unlocking the door of the little cottage, Dave went inside and lost no time in throwing open a number of windows, so that the fresh summer air from outside might dispel the dampness within. Then Caspar Potts entered, and both ascended the narrow stairway to the upper floor. Here was a tiny garret, which in the past had been given over mostly to the storage of old furniture and other articles not in use. "I trust none of the tenants have disturbed that box," remarked Caspar Potts, when Dave had lit a candle which he had thoughtfully brought along. "I see the box, Professor," answered the youth. "Here, if you will hold the candle I will get it out." And then Dave worked his way over to a corner under the eaves, and from behind a broken rocking-chair and a dilapidated couch, dragged forth a small wooden box, painted blue. He threw back the cover, exposing to view thirty or forty books, covered with dust and yellow with age. "Good! good!" murmured the old professor, as he brushed one of the volumes off with his coat sleeve. "Some of these books are not very valuable, David, but a few of them will add quite a little to our library. I had those volumes when I was a student at college," he added proudly. "I'll carry the box downstairs," said Dave. Caspar Potts, candle in hand, led the way to the floor below. As he came out into the kitchen of the cottage, he was somewhat surprised to find two persons on the porch, talking earnestly.