"If you don't, I'll never forgive you. I'm a very cruel man, and that is the only way to insure good treatment for your mother. You'd better, Sally." And the doctor wagged his head in a threatening manner. Sally laughed. "It'll be your own fault if you get too many letters. But you needn't answer them, if you don't have time." "We'll see. We'll see. I guess I shall manage to find a few minutes, now and then, to write to Miss Sally Ladue." CHAPTER XIII It was September before Sally was ready to go to Whitby. Indeed, it cannot be said that she was ready then, or that she ever would have been ready, if her wishes only had been involved. But by the middle of September she had done all the things that she had to do, her belongings and Charlie's were packed in two small trunks, and there did not seem to be any excuse for delaying her departure longer. She had gone, with Doctor Galen, one memorable day, to see the sanitarium. He, I suppose, had thought that perhaps Sally would feel better about going if she saw for herself just the way in which her mother would be taken care of. So he took her all over the building, himself acting as her guide, and she saw it all. She did feel better. When she had seen the whole thing and had absorbed as much as the doctor thought was good for her, they went into town again and had lunch with Mrs. Galen. There weren't any children and there never had been. So much the worse for the doctor and for Mrs. Galen. They had missed the best thing in life, and they knew that they had and regretted it. After lunch, the doctor went home with Sally. She thought, with some wonder at it, that the doctor could not have had much to do that day, for he had given the whole of it to her. There were many of his patients who thought otherwise--a whole office full of them; and they waited in vain for the doctor. A few days later Sally had bidden a last mournful farewell to all her favorite haunts. She had been devoting her spare time for a week to that melancholy but pleasant duty. The little lizard would never more sit high in the branches of the coal trees and look out over the prospect of treetops and swamp. Never again would the gynesaurus feed on stove coal plucked, ripe, from the branches whereon it grew. Sally laughed, in spite of her melancholy, as this thought passed through her mind; and the gynesaurus stopped eating coal and incontinently slid and scrambled down the tree, landing on the ground with a thump which was more like that made by a little girl than that a lizard would make. And she ran into the house in rather a cheerful frame of mind. It was almost time for the man to come for their trunks. Fox met her as she came in. "It's a good chance to say good-bye to your mother, Sally. She's wandering about in her room."