"I often think, when I look in the glass now," she said, "that I shouldn't know my own self, if I hadn't seen myself since three years ago." Then she led Nelly to one side, and explained to her that she had met Arthur and his papa up at Idaho Springs, where she had gone immediately after leaving Nelly in Denver. Mr. Cook had taken Arthur there, to see if the water in the Idaho Springs would not cure his lameness. They had all lived in the same hotel at Idaho all winter, and in the spring Mrs. Williams had been married to Mr. Cook, and had thus become Arthur's mother. Mr. Cook's home was in New York; but they had come to Colorado every summer for Arthur's sake. He always was much better in Colorado. While they were talking, Mr. Cook came out of his tent; and surprised enough he looked to see his wife sitting on the ground with a little stranger girl in her lap, and Arthur in eager conversation with a boy he had never seen before. He stood still on the threshold of the tent for a moment, looking in astonishment at the scene. "Oh, Edward! Edward!" exclaimed Mrs. Cook, "this is my little friend! Think of our having found her at last, down in this valley!" "Is it possible!" said Mr. Cook. "Why, I am as glad to see you, my little girl, as if I were your own uncle. I didn't know but I should have to go journeying all about the world, like my famous ancestor, Captain Cook, to find you; for my wife has never given up talking about you since I have known her." Mr. Cook was so tall and so big Nelly felt half afraid of him. He was as tall as Long Billy, and twice as big: he had a long, thick beard, of a beautiful brown color, and his eyes were as blue as the sky. Nelly thought he looked like one of the pictures, in a picture-book Rob had, of "Three Giant Kings from the North who came Over the Sea." But when he smiled you did not feel afraid of him; and his voice was so good and true and kind that everybody trusted him and liked him as soon as he spoke. "Was Captain Cook really an ancestor of yours?" asked Nelly, eagerly. "Oh!" cried Rob, bounding away from Arthur, and looking up with reverence into this tall man's face, "are you a relation of Captain Cook? Have you got any of his things? Did you know him? Did he ever tell you about his voyage? We've got the book about them: I know everywhere he went." Mr. Cook lifted Rob up in his arms, and tossed him over his shoulders, and whirled round with him, and set him down on the ground again, before he answered. This was a thing Mr. Cook loved to do to boys of Rob's size. Boys of that age are not used to being picked up and tossed like babies; but Mr. Cook was so strong he could toss a big boy as easily as you or I could a little baby.