"My dear madam," said the doctor, "medicine is often very unpleasant to take, unpleasant for the patient and sometimes for his friends as well. I can build your boy's system up from time to time with tonics, but I can do him no permanent good. My medicines are only palliatives; the real trouble is with his environment. If the conditions of his life are changed, he will be certain to throw off the lassitude and weakness which he now feels, and to become a stout and hearty boy about whose general health you need have no farther concern; but it is important that now, when eight or ten years of schooling and study are before him, he should have a well-nourished body. I know of nothing that promise so much in this direction as a course of open-air life and vigorous exercise. Now he stays too much in the house and cares for nothing but books. This is not natural for a boy of his age. He ought to be full of animal spirits and to be working them off by climbing trees, running races and fighting. Think this matter over carefully, Mrs. Danvers, and let me know what you and your husband decide." After much thought and many long talks, the parents had at last made up their minds to let their boy go. All preparations had been made, and on the next day Jack and his uncle were to take the train for the Far West. "Well, Uncle Will," said Jack, "first, I want to know how long it will take us to get out to the ranch?" "Five days, unless something happens to delay us," said Mr. Sturgis. "Next," said Jack, "I want to know what I can do on the ranch. I want to help in the work, you know, but I don't know how to ride, or how to do anything that you have to do out there among the cattle and horses. I'll have to learn a great deal before I can be of any use." "Yes, of course, you will have to learn. You will pick up riding and roping readily enough, but to learn the ways of the prairie and the mountains is not so easy, and unless you are with some one that knows all that and tries to teach you, it will take you a long time to learn. You can easily learn the cowboy part of your education from almost any of us out at the ranch, but there is only one man there who can teach you how to become a good mountain man; that is old Hugh Johnson. He has lived on the plains and in the mountains for more than forty years, and has hunted, trapped and fought Indians from the Mississippi to the Pacific, and from the Saskatchewan to the Rio Grande. He knows the plains and the mountains better than any one I ever saw, and is like an Indian for reading sign." "What do you mean by reading sign, Uncle Will?" said Jack.