Both children said their prayers, and each thanked God in her own way for the blessing He had bestowed on Clara, who had for so long lain weak and ill. The next morning the grandfather suggested that they should now write to the grandmamma and ask her if she would not come and pay them a visit, as they had something new to show her. But the children had another plan in their heads, for they wanted to prepare a great surprise for grandmamma. Clara was first to have more practice in walking so that she might be able to go a little way by herself; above all things grandmamma was not to have a hint of it. They asked the grandfather how long he thought this would take, and when he told them about a week or less, they immediately sat down and wrote a pressing invitation to grandmamma, asking her to come soon, but no word was said about there being anything new to see. The following days were some of the most joyous that Clara had spent on the mountain. She awoke each morning with a happy voice within her crying, "I am well now! I am well now! I shan't have to go about in a chair, I can walk by myself like other people." Then came the walking, and every day she found it easier and was able to go a longer distance. The movement gave her such an appetite that the grandfather cut his bread and butter a little thicker each day, and was well pleased to see it disappear. He now brought out with it a large jugful of the foaming milk and filled her little bowl over and over again. And so another week went by and the day came which was to bring grandmamma up the mountain for her second visit. CHAPTER XXIII. "GOOD-BYE TILL WE MEET AGAIN" Grandmamma wrote the day before her arrival to let the children know that they might expect her without fail. Peter brought up the letter early the following morning. Grandfather and the children were already outside and the goats were awaiting him, shaking their heads frolicsomely in the fresh morning air, while the children stroked them and wished them a pleasant journey up the mountain. Uncle stood near, looking now at the fresh faces of the children, now at his well-kept goats, with a smile on his face, evidently well pleased with the sight of both. As Peter neared the group his steps slackened, and the instant he had handed the letter to Uncle he turned quickly away as if frightened, and as he went he gave a hasty glance behind him, as if the thing he feared was pursuing him, and then he gave a leap and ran off up the mountain. "Grandfather," said Heidi, who had been watching him with astonished eyes, "why does Peter always behave now like the Great Turk when he thinks somebody is after him with a stick; he turns and shakes his head and goes off with a bound just like that?" "Perhaps Peter fancies he sees the stick which he so well deserves coming after him," answered grandfather.