Pericord sat silently on the edge of the case, staring blankly down, and shivering like one with the ague, while the great Brown-Pericord Motor boomed and hurtled above him. How long he sat there can never be known. It might have been minutes or it might have been hours. A thousand mad schemes flashed through his dazed brain. It was true that he had been only the indirect cause. But who would believe that? He glanced down at his blood-spattered clothing. Everything was against him. It would be better to fly than to give himself up, relying upon his innocence. No one in London knew where they were. If he could dispose of the body he might have a few days clear before any suspicion would be aroused. Suddenly a loud crash recalled him to himself. The flying sack had gradually risen with each successive circle until it had struck against the rafters. The blow displaced the connecting-gear, and the machine fell heavily to the ground. Pericord undid the girdle. The motor was uninjured. A sudden, strange thought flashed upon him as he looked at it. The machine had become hateful to him. He might dispose both of it and the body in a way that would baffle all human search. He threw open the barn door, and carried his companion out into the moonlight. There was a hillock outside, and on the summit of this he laid him reverently down. Then he brought from the barn the motor, the girdle and the flanges. With trembling fingers he fastened the broad steel belt round the dead man's waist. Then he screwed the wings into the sockets. Beneath he slung the motor-box, fastened the wires, and switched on the connection. For a minute or two the huge yellow fans flapped and flickered. Then the body began to move in little jumps down the side of the hillock, gathering a gradual momentum, until at last it heaved up into the air and soared heavily off in the moonlight. He had not used the rudder, but had turned the head for the south. Gradually the weird thing rose higher, and sped faster, until it had passed over the line of cliff, and was sweeping over the silent sea. Pericord watched it with a white drawn face, until it looked like a black bird with golden wings half shrouded in the mist which lay over the waters. * * * * * In the New York State Lunatic Asylum there is a wild-eyed man whose name and birth-place are alike unknown. His reason has been unseated by some sudden shock, the doctors say, though of what nature they are unable to determine. "It is the most delicate machine which is most readily put out of gear," they remark, and point, in proof of their axiom, to the complicated electric engines, and remarkable aeronautic machines which the patient is fond of devising in his more lucid moments. VI THE SEALED ROOM