"I was to stop at twelve o'clock to get a package of drawin's or somethin' from Hammond and Green, the engineers. I got them all right, and started for the plant. Went up Woodward to the Boulevard and across. You know where the Boulevard goes under the railroad? Well, right there a machine came up behind me and bumped me. I went down pretty hard. Sort of knocked out for a minute. When I scrambled up I looked all over for that package, but I couldn't find it any place. It couldn't have fell anywhere out of sight, for I was right under the railroad. There wasn't any sewer openin's or anythin'.... Somebody must 'a' swiped it. I hunted good, and then I come down here as fast as I could. The motor-cycle wasn't hurt any." "What was in the package? What drawings?" "I don't know, sir." Potter called an attendant. "Show this man the wash-room and help him brush up," he said. Then he stepped quickly into a telephone-booth and called the plant. "Mr. Withers," he said to the switchboard-operator, and presently the chief of the Waite mechanical engineers answered the telephone. "This is Potter Waite. What drawings were you getting from Hammond and Green this noon?" "A set of blue prints of Buildings G and F." "A complete set?" "Yes, showing machinery placed, shafting, conveyers--everything." "Thank you," said Potter, and hung up the receiver. Givens was waiting, a trifle more presentable. "You're sure there's no chance you overlooked the package anywhere?" Potter asked. "No, sir. I think it was a plant, Mr. Waite, that's what. I think them men in that machine knocked me over apurpose to swipe them drawin's." "I'm inclined to agree with you. Better go home and get fixed up. Need a new suit, won't you? Buy it and give the bill to me." "Thank you, Mr. Waite," Givens said, and limped away. Potter drove at once to the office. As he entered he met Downs, the Secret Service man, coming down the stairs. "Come up to the office, please," Potter said. "Something in your line, I guess." Potter closed the door and motioned to a chair. "A messenger bringing drawings of the buildings we're changing over was knocked down on his way out this noon, and the blue prints taken away from him." He gave the incident to Downs as Givens had given it to him. "By the way," he added, "a mighty strange thing happened last night. An aeroplane was stolen." "Saw it in the paper," said Downs. "I've been wondering," Potter said, "if there was any connection between the two thefts. Seems far-fetched, but these are far-fetched days. Who would steal an aeroplane, and what in thunder would he steal it for?" "An aeroplane is a mighty useful toy," said Downs. "A mighty conspicuous toy."