theless, the trio beneath the bridge were acting suspiciously. What could we do? German secret agents had committed many outrages during the past ten days, more especially in blowing up bridges and wrecking public buildings with bombs, in order to disorganise any attempt at resistance, and strike terror into the hearts of Londoners. A bomb had been exploded on the terrace of the House of Commons two days before, causing great havoc, while the entrance hall of the Admiralty had also been wrecked. Penge tunnel had, by explosives, been rendered impassable, and an attempt in the tunnel at Merstham had very nearly been successful. Were these suspicious men engaged in the dastardly act of blowing up Waterloo Bridge?
"It suddenly struck me that it might be part of Von Kronhelm's scheme to blow up certain of the bridges in order to prevent those who had fled south from returning and harassing his troops, or else he wished to keep the inhabitants remaining north of the Thames, and prevent them from escaping. As I stood upon the police pier I saw the two men high upon the scaffold motion to the third man, still in the boat, when, after a few moments the last-named individual left the boat, carrying something very carefully, an object looking like a long iron cylinder, and slowly made his way up the perpendicular ladder to where the pair were standing right beneath the crown of the huge arch.
"Then I knew that they were Germans, and realised their foul intention. A few feet above them hundreds were fighting and struggling, all unconscious of that frightful explosive they were affixing to the arch. What could I do? To warn the crowd above was impossible. I was far below, and my voice would not be heard above the din.
"'What are those fellows doing, do you think, father?' inquired my boy, with curiosity.
"'Doing?' I cried. 'Why, they're going to blow up the bridge! And we must save it. But how?'
