By this time T.'s ambition began to assume a definite form. He was determined that he should have the honor and the emoluments which would come to him as a result of solving one of the toughest problems in engineering--one which had puzzled both technical and practical men for many years. He therefore saved up a few dollars and, packing his little belongings, departed to complete his education in one of the most famous technical engineering schools of the country. Tuition was high. Board cost a good deal of money. Books were distressingly expensive. Tools, machine shop fees, and other incidentals ate into the little store he had brought with him, and inside of two months it was gone. He hunted around and finally secured a job running an engine. This meant twelve hours in the engine room every night. In addition, he did what other students considered a full day's work attending lectures and carrying on his studies in the laboratories and classroom. He went almost without necessary food and clothing in order to buy books, tools, and other equipment. But he was young, he was strong, and, above all, he was happy in his mental picture of the great object of his ambition. In due time he had taken his degree, having specialized on all subjects bearing upon the solution of his great problem. PATIENT TOIL HIS GENIUS Coming back from the university after having finished his course, T. found a position as engineer in an electric light and power plant. Then he began saving up money to purchase the necessary equipment for a laboratory of his own. Finally, he had a little building and was one of the proudest young men we ever saw. Little by little, he added to his apparatus the things he needed. Several nights a week, after his hard day's work in the engine room, he toiled, trying to solve the problem upon which he had fixed his mind. About this time he married, and he and his wife moved into a narrow little flat. Years passed, children came into the little flat, and still he worked at his problem. Again and again, and still again, he failed. Yet, each time he failed, he told us he was coming closer to the solution. At last came the day, after many heart-breaking experiences, when the problem, while not fully solved, had at least revealed a solution which was commercially valuable.