“It’s the strangest thing I ever saw!” exclaimed the surgeon. “Mindful of your interest in the man, I decided not to trust him to the care of any of the hospital attendants to-night. After doing what I could for him, I sat down by the side of his bed to read and smoke. My mind was never clearer or farther from drowsiness than it was at that time.” “Yes,” Havens said, in a sarcastic tone, “the result seems to indicate that you were wide awake!” “I tell you,” almost shouted Bolt, “that I was stupefied by the injection of chloroform or some other anesthetic into the room!” “How could that be possible?” demanded Havens. “I don’t know!” wailed Bolt. “I certainly do not know! The window was closed when I looked at it last, just before I became unconscious. When I came to my senses to find the bed empty, a cold wind was blowing on my face. That is undoubtedly what awakened me. Only for that I might have slept myself to death!” While the two talked together a watchman from the office building approached and informed Havens that a lady was waiting there to see him. “That, probably,” suggested Bolt, “is the night matron from the hospital. She was making investigations when I left, and promised to come here at once on the discovery of anything new in the case.” Havens hastened to the office building and there, as the surgeon had predicted, found the night matron waiting for him. “I can’t understand,” she said addressing the millionaire abruptly, without waiting for him to speak, “what is going on at the hospital to-night! Immediately after the departure of Doctor Bolt I sent word for every person, man or woman, connected with my service to appear in the reception room. In five minutes’ time I discovered that two men employed only three days ago were not present. “After waiting a few moments for their appearance, I sent a messenger to their rooms. They were not there! Their beds had not been slept in, and every article of wearing apparel belonging to them had been taken from their closets.” “One question,” Doctor Bolt said, addressing the matron. “Was any one on watch outside the door of the room in which I was so mysteriously put to sleep?” “There was no one on watch there,” was the reply. “Then,” declared Bolt, “the two attendants who have disappeared injected the anesthetic I have already referred to through the keyhole of the door. After I became unconscious they entered and removed the prisoner. It is all the fault of the hospital!” The night matron turned up her nose at the surgeon. CHAPTER IV. THE DIGNITY OF THE LAW. The two flying machines, the _Louise_, with Jimmie and Carl on board, and the _Bertha_, with Ben in charge, flew swiftly over the great city, lying before them with its lights stretching out like strings of beads, crossed the North river with its fleets of vessels, and passed on over New Jersey, heading directly for the west.