His helplessness with the dictionary was proof, of course, that he was no scholar. And yet a boy might have a fair education in the schools of today and be unfamiliar with this ponderous and dignified encyclopedia of words. It was impossible to believe that he was illiterate. His clothes, his carriage, even his manners made such an idea preposterous. Besides, no inventor could be really illiterate. He may have been forced to work and only attended night schools. But if he were a mechanic, capable of making a successful improvement on one of the most delicate and important parts of an automobile, he must have studied the principles involved in his inventions. His choice of a profession appealed to her imagination, too. It showed independence and initiative. It opened boundless possibilities. He might be an obscure and poorly educated boy today. In five years he could be a millionaire and the head of some huge business whose interests circled the world. The tired brain wore itself out at last in eager speculations, and she fell into a fitful stupor. The roar of the street-cars waked her at daylight, and further sleep was out of the question. She rose, dressed quickly and got her breakfast in a quiver of nervous excitement over the adventure of the coming automobile. As the hour of eight drew nearer, her doubts of the propriety of going became more acute. “What on earth has come over me in the past twenty-four hours?” she asked of herself. “I've known this man but a day. I don't KNOW him at all, and yet I'm going to put my life in his hands in that racing machine. Have I gone crazy?” She was not in the least afraid of him. His face and voice and personality all seemed familiar. Her brain and common-sense told her that such a trip with an utter stranger was dangerous and foolish beyond words. In his automobile, unaccompanied by a human soul and unacquainted with the roads over which they would travel, she would be absolutely in his power. She set her teeth firmly at last, her mind made up. “It's too mad a risk. I was crazy to promise. I won't go!” She had scarcely spoken her resolution when the soft call of the auto-horn echoed below. She stood irresolute for a moment, and the call was repeated in plaintive, appealing notes. She tried to hold fast to her resolutions, but the impulse to open the window and look out was resistless. She turned the old-fashioned brass knob, swung her windows wide on their hinges and leaned out. His keen eyes were watching. He lifted his cap and waved. She answered with the flutter of her handkerchief--and all resolutions were off. “Of course, I'll go,” she cried, with a laugh. “It's a glorious day--I may never have such a chance again.” CHAPTER V. WINGS OF STEEL She threw on her furs and hurried downstairs. Her surrender was too sudden to realize that she was being driven by a power that obscured reason and crushed her will.