At the academy, after many other adventures, including aiding and abetting the fighting of a mock duel between Professor Garlach, the German teacher, and Professor Socrat, the French instructor, Jack made the acquaintance of one John Smith, a half-breed Indian who had come to the academy for instruction. John had considerable Indian blood in his veins, as he proved on more than one occasion. Nevertheless, he and Jack Ranger became great chums. One day John Smith disappeared. His friends found that his room had been entered at the school, and there were evidences of a hurried search having been made. Nat discovered, in John's absence, a curious ring under a steam radiator. It was the exact counterpart of the one the burglar stole in Denton. Jack was much puzzled at this, and more, when it developed that John had been kidnapped by some mysterious men. At last the semi-Indian lad was saved by Jack and Nat. John Smith told Jack as much of the secret as he knew. It appeared that his father had given him the ring just before his death, and told him if he was ever poor or in trouble to take it to a man named Orion Tevis, and state who the bearer was. Some time before that, the elder Smith had been in Oregon and Tevis came to him to get him to be a guide to a wild forest country in the far north. There he had bought five thousand acres of valuable land. Some schemers had stolen the papers connected with it and were making for the place, to take possession first, as that would give them a sort of title. Tevis was too sick to make the journey himself, and got Smith to go with some of his own companions. John's father took a man named Clark and one called Roberts with him. Mr. Roberts, or Robert Ranger, which was his real name, was Jack's father. Because of some strange circumstances he had not seen his son in many years. Roberts, for so he was known many years, Clark, and Smith succeeded in claiming the land for Tevis. He gave them each ten thousand dollars for their work and had three rings made as mementoes. They were like the one stolen from the jewelry store. In addition Tevis said that at any time the men or their relatives needed his help they could have it. Clark, later, was killed, John Smith's father retired on his little fortune and Jack's father got into trouble. It seemed that the land schemers offered him a large sum to help them contest Tevis's title. He refused, but learned that, if they could get him into court, they could throw the timber claim into litigation, and force Tevis to pay a large sum to compromise. Rather than do this Roberts told Smith he would become a wanderer over the earth. Mr. Ranger sent his money to his sisters, Jack's aunts, for the use of his son, and then disappeared. He knew that if he could evade legal service for eleven years he would be free, and that was why he never sought to see his boy or sisters.