Shutting his eyes and keeping his legs tightly closed and straight out, Atherton released his hold and dropped. He hit the water with tremendous force, descending nearly ten feet. Instinctively he swam to the surface and, shaking the water from his hair and eyes, struck out down stream. Twenty yards from him, and just visible in the murky atmosphere, he caught sight of a dark object just showing above the surface. The next moment it vanished. Putting all his energy into his strokes Atherton swam to the spot and, guided by the bubbles, dived. It seemed a forlorn hope, for at a few feet below the surface the thick yellow water was so opaque that he could not distinguish his hands as he struck out. For nearly half a minute the brave lad groped blindly. His breath, already sorely taxed by the force of his drop from the bridge, was failing him. He must come to the surface ere he could renew his vague search. Just as he was on the point of swimming upwards his left hand came into contact with a submerged object. His grip tightened. With a thrill of satisfaction he realised that he had hold of the victim of the outrage. Thank Heaven, the surface at last! Turning on his back Atherton drew in a full breath of the dank yet welcome air, then shifting his grasp to the collar of the rescued man drew him face uppermost to the surface. To all appearance the old gentleman was dead. His eyes were wide open, his lips parted, his features were as white as his hair. The Scout looked about him. His vision was limited to a circle of less than fifty yards in radius; beyond this the mist enveloped everything. The Embankment, the bridges, the Surrey side--all were invisible. But above the noise of the traffic on the Embankment and the rumble of the trains across the river came the dull roar of voices, for already a dense crowd had gathered almost as soon as the alarm had been given by the hitherto apathetic pedestrians on the foot-bridge. "The wind was blowing down stream," thought Atherton. "If I keep it on my left I ought to strike shore somewhere, so here goes." Still swimming on his back, and holding up the head of the rescued man, the Scout headed towards the Middlesex side. His progress was slow, for his burden was a serious drag, and his strength had already undergone a severe strain. His clothes, too, were a great impediment. Had it been clear weather Atherton would have been content to keep himself afloat till picked up by a boat, but he did not relish the idea of drifting aimlessly on the bosom of old Father Thames; his plan was to make for land, hoping to reach the Embankment somewhere in the neighbourhood of the steps by Cleopatra's Needle.