"Oh, nonsense! put it off," they said. "Only just for a quarter of an hour. Come along!" And Otto went. To tell the truth, he relied secretly upon his unseen friend, who would certainly shield him from punishment. He found it extremely agreeable to feel such a support under his feet; and the quarter slipped into the full hour, and Otto was lost. He went back to the schoolhouse to fulfil his duty, and threw open the door with such a slam that the master rushed out of his room very quickly, and asked,-- "What do you want, Otto?" "Only to look in again, to see if every thing is as it should be," stammered the boy. "This is excellent," said the teacher; "but it is not necessary for you to slam the door in that way." Otto went away in good spirits. On Friday he made up his mind not to do his work of cleaning until he was satisfied about the mystery; and then,--then there would only be Saturday morning left of his week. "Otto," called out the teacher on Friday, as the clock struck four, "take this paper over to the pastor as quickly as you can. He will give you some papers to bring back. It will only take you a moment or two, and you will be here in time to brush out the room." The boy did not like to go very well, but there was no help for it; and, of course, he could be back in a twinkling. He reached the parsonage in half a dozen bounds. The pastor was busy, just then, with a visitor. His wife called Otto to her in the garden. She wanted to know how his mamma found herself; if his father were well, and Pussy, too; how Uncle Max was employed; and if they had good news from their relations in Germany. Then the pastor made his appearance, and Otto had to explain why it was his business to bring the papers, and what the teacher was doing at present. At last he got his papers, and was off like an arrow, pulled open the door of the schoolroom,--to find every thing swept and garnished, and no living being visible. "And I have not been obliged to stoop once, to clear away the tiresome bits, the whole week through," thought Otto contentedly. "But who can have done all this dirty work without being obliged to do it?" Now he determined, for once and all, to have that question settled. The school hours ended at eleven o'clock on Saturday. Otto waited until all the children had gone, and the room was empty. Then he went outside, closed the door, and leaned with his back against it. There could no one enter without his seeing who it was. He preferred to do this, rather than to go at once to work at the sweeping and cleaning. He waited and waited: no one came. He heard the clock strike the half-hour. There were plans at home for an excursion that afternoon. The family were to dine early, to get away soon after dinner. He ought to begin with his work at once, if he wanted to get home in good season. How he hated it!