“I guess you're right. But where is the money coming from? That's where most inventors give up the lion's share--at the beginning.” “I don't know,” said Tommy, thoughtfully; “but I do know I'm going to get it without money.” “If you can do that--” “What else can we do, you bonehead? We have no money and we must have some light.” When Professor Jenkins's answer came Tommy and Bill, with their list of questions all ready and the carburetor carefully packed, asked for a day off and traveled by night to Cleveland. In Professor Jenkins's office Tommy introduced himself and Bill with an ease and fluency that Bill envied. Professor Jenkins appeared intelligently interested. It was to Bill that he turned and asked: “What is it you have, young man?” “I--we have a kerosene-carburetor that works like a charm,” answered Bill. “Is that so?” The professor did not speak skeptically, but Bill said, defiantly: “It gives perfect combustion, and we can start the engine cold even better than with gasoline. Peach!” “Lots of people are working on that.” “Yes, sir; but you never saw one that did what ours does.” “What's the difference between yours and the others?” Bill hesitated. “Tell him,” said Tommy, frowning. “I don't know anything about the others except that they don't work.” “Show it to him,” commanded Tommy. Bill aimed a look at his partner, making clear who would be to blame if somebody else got a patent on the selfsame carburetor, and then slowly unwrapped the package. With his child before him Bill became loquacious, and he began to explain it to the professor, who listened and asked question, most of which Bill answered. Occasionally he said, “I don't know,” and then Tommy would interject, “But it works, Professor Jenkins.” Bill could not tell how high a voltage he was using nor the kind of transformer. “The man I bought it from said it was a six-to-one transformer. There is no marking on it.” The professor smiled, asked more questions, and finally Bill confessed that it didn't work above nine hundred revolutions. “When we speed her up she begins to smoke like--” “She does smoke pretty badly,” interjected Tommy. “Why?” asked Jenkins. “Damfino!” said Bill, crossly. It had been a source of exasperation to him. “That is what we are here to find out, sir,” put in Tommy, deferentially. “I've tried every blamed thing I could think of,” said Bill. “If I only knew why she works below nine hundred I might make it work when I speed her up.” “H'm!” The professor was thinking over what Bill had told him. Then he said: “Well, you evidently are using a very high current. I suspect there must be some ionization there.” He paused. Then, more positively: “I think you undoubtedly are ionizing the vapor. That would account for what results you say you are getting.” “What is it that happens?” asked Bill, eagerly.