But, as the years had gone on, it was observed that the minor jobs, obtained with difficulty by the men whom Dean Erskine had trained and recommended, nearly always became jobs of fundamental importance. The observation bore fruit. Little by little "Dean Erskine men" were scattered across the continent until even as early as Roger's graduating year, it was the custom of engineering concerns and manufacturers to watch the Dean's laboratories closely and to bespeak the services long before commencement of every promising lad in the class. By the Dean's advice, however, Roger did not accept any of these positions. He decided to take an instructorship in the University and keep on with his experiments in solar engineering. Both he and Erskine felt that in a couple of years, at most, Roger would have something practical to offer the world. Ernest also took an instructorship, working toward his doctor's degree. His father was delighted. He was immensely proud of Ernest's work in college, and a full professorship for Ernest would have meant as much to Papa Wolf as the national presidency for his boy. The two years flew rapidly. The summer that he was twenty-five, Roger, armed with letters of introduction from the Dean, and a roll of drawings, went to Chicago. He was about to market his dream and he proposed to give the two summer months to the job. After that--well, the possibilities staggered even Roger's imagination, which was an active one. Haskell and Company, makers of Gas-Engines! The sign was as inconspicuous as the firm was famous in the middle West. Roger, after two days of waiting, was staring at the faded gilt letters until the moment of his interview with Mr. Haskell arrived. He was a little uncertain about the knees, but very sanguine for all that. Mr. Haskell, a small man with a grizzled beard, sat behind a desk in a room that was small and dingy. The desk seemed to Roger an unnecessarily long way from the door, as he advanced under Mr. Haskell's eyes. "Well, Sir, so you're one of Erskine's men. Ought to be good. Solar engine, though, doesn't sound cheerful. What's the idea?" Roger unrolled his drawings and began his explanations. Haskell listened with keen interest, asking questions now and again. When Roger, flushed of cheek, had finished, Haskell lighted his cigar, which had gone out. "Very clever! Very clever! A nice little experiment. What do you want to do with it?" "I want you to manufacture and sell these solar heat plants," replied Roger boldly. "I see. But are you sure such a plant is practicable?" "Absolutely!" "Where have you had one working?" "At the University." "You mean in the laboratory." Roger nodded. Haskell cleared his throat and looked over Roger's black head for a minute, then he said: