Heidi now went to school in Dorfli every morning and afternoon, and eagerly set to work to learn all that was taught her. She hardly ever saw Peter there, for as a rule he was absent. The teacher was an easy-going man who merely remarked now and then, "Peter is not turning up to-day again, it seems, but there is a lot of snow up on the mountain and I daresay he cannot get along." Peter, however, always seemed able to make his way through the snow in the evening when school was over, and he then generally paid Heidi a visit. At last, after some days, the sun again appeared and shone brightly over the white ground, but he went to bed again behind the mountains at a very early hour, as if he did not find such pleasure in looking down on the earth as when everything was green and flowery. But then the moon came out clear and large and lit up the great white snowfield all through the night, and the next morning the whole mountain glistened and sparkled like a huge crystal. When Peter got out of his window as usual, he was taken by surprise, for instead of sinking into the soft snow he fell on the hard ground and went sliding some way down the mountain side like a sleigh before he could stop himself. He picked himself up and tested the hardness of the ground by stamping on it and trying with all his might to dig his heels into it, but even then he could not break off a single little splinter of ice; the Alm was frozen hard as iron. This was just what Peter had been hoping for, as he knew now that Heidi would be able to come up to them. He quickly got back into the house, swallowed the milk which his mother had put ready for him, thrust a piece of bread in his pocket, and said, "I must be off to school." "That's right, go and learn all you can," said the grandmother encouragingly. Peter crept through the window again-- the door was quite blocked by the frozen snow outside--pulling his little sleigh after him, and in another minute was shooting down the mountain. He went like lightning, and when he reached Dorfli, which stood on the direct road to Mayenfeld, he made up his mind to go on further, for he was sure he could not stop his rapid descent without hurting himself and the sleigh too. So down he still went till he reached the level ground, where the sleigh came to a pause of its own accord. Then he got out and looked round. The impetus with which he had made his journey down had carried him some little way beyond Mayenfeld. He bethought himself that it was too late to get to school now, as lessons would already have begun, and it would take him a good hour to walk back to Dorfli. So he might take his time about returning, which he did, and reached Dorfli just as Heidi had got home from school and was sitting at dinner with her grandfather. Peter walked in, and as on this occasion he had something particular to communicate, he began without a pause, exclaiming as he stood still in the middle of the room, "She's got it now."