There were very few people in the city and suburbs who were at that hour out of doors where they could see the great cloud of water arise toward the sky, and behold it descend like a mighty cataract upon the harbour and adjacent shores; but the quick, sharp shock which ran under the town made people spring from their beds; and although nothing was then to be seen, nearly everybody felt sure that the Syndicate's forces had begun their day's work by exploding another mine. A lighthouse, the occupants of which had been ordered to leave when the fort was evacuated, as they might be in danger in case of a bombardment, was so shaken by the explosion of this motor-bomb that it fell in ruins on the rocks upon which it had stood. The two crabs now took the steel net from its moorings and carried it up the harbour. This was rather difficult on account of the islands, rocks, and sand-bars; but the leading crab had on board a pilot acquainted with those waters. With the net hanging between them, the two submerged vessels, one carefully following the other, reached a point about two miles below the city, where the net was anchored across the harbour. It did not reach from shore to shore, but in the course of the morning two other nets, designed for shallower waters, were brought from the repellers and anchored at each end of the main net, thus forming a line of complete protection against submarine torpedoes which might be sent down from the upper harbour. Repeller No. 1 now steamed into the harbour, accompanied by Crab A, and anchored about a quarter of a mile seaward of the net. The other repeller, with her attendant crab, cruised about the mouth of the harbour, watching a smaller entrance to the port as well as the larger one, and thus maintaining an effective blockade. This was not a difficult duty, for since the news of the extraordinary performances of the crabs had been spread abroad, no merchant vessel, large or small, cared to approach that port; and strict orders had been issued by the British Admiralty that no vessel of the navy should, until further instructed, engage in combat with the peculiar craft of the Syndicate. Until a plan of action had been determined upon, it was very desirable that English cruisers should not be exposed to useless injury and danger. This being the state of affairs, a message was sent from the office of the Syndicate across the border to the Dominion Government, which stated that the seaport city which had been attacked by the forces of the Syndicate now lay under the guns of its vessels, and in case of any overt act of war by Great Britain or Canada alone, such as the entrance of an armed force from British territory into the United States, or a capture of or attack upon an American vessel, naval or commercial, by a British man-of-war, or an attack upon an American port by British vessels, the city would be bombarded and destroyed.