The trio then learned that passes had been granted the members in Mr. Fabian's party, to leave the steamer that night and go back with their friends, on the yacht. So the cabin baggage had been brought up to the gang-way, and when Mr. Dalken summoned John and his companions to come and help the girls get away, the boats were already on their way to the yacht with the luggage. Many of their fellow-passengers crowded about the party when they were ready to go. Good-bys were exchanged and the happy bevy of young folks left. Then the boat returned for the older members in the party, and soon the yacht was ready to fly back to her dock, up the River, near 72nd street. But the thick haze that had made the moon look so romantic, developed into an impenetrable fog. And anyone who has ever experienced such a fog hanging over New York Harbor, knows what it is to try to go through it. So the vessel had not traveled past the Statue of Liberty, before the heavy pall of fog suddenly dropped silently over the Bay, and anything farther than a few feet away from the radius of the electric lights on the boat, was completely hidden. The Captain bawled forth orders to the crew and instantly the uniformed men were running back and forth to carry out the instructions. Before all impetus to the yacht was closed down, however, the engines had driven her into the route generally used by the pilots of the boats running to Staten Island. Captain Johnson anxiously studied his chart but could not gauge his position exactly, because of the dense fog and the lack of signals. In a few minutes more, every fog-horn in the Bay and all the great reflectors from guiding lights from bell-buoys would be in full operation. But at the time, there was nothing to tell him that he was in a dangerous zone. CHAPTER III THE ACCIDENT When the party reached the yacht, Mr. Dalken said that chairs had been placed on the forward deck where they could sit and watch the scenes at night, as they sailed up to the City. So all but Tom and Polly went forward and found comfortable seats. Tom had asked Polly to stroll about with him, and she, feeling guilty of neglecting such an old friend when on the steamer, consented. Thus it happened that Tom led her to the side of the craft where they had climbed the ladder to the deck, as this side was in shadow and farthest from the group of friends who were seated on the forward deck. But they had not promenaded up and down many times, before the Captain gave anxious commands to his crew. Every man jumped to obey, instantly, while Tom and Polly halted in their walk just at the gap in the rail, where the adjustable ladder had been lowered to the boat when the passengers arrived from the steamer. The steps had been hauled in but the sailor had forgotten to replace the sliding rail. In the dense fog this neglect had been overlooked.