After that the talk drifted around to the matter of the treasure hunt and Songbird was given some of the details, in which he became much interested. He declared that he thought the trip on the steam yacht would be even more interesting than the one on the houseboat had been. "We're after something definite this trip," he said. "We've got something to look forward to--especially if that Sid Merrick starts a rival hunt." "We want to get ahead of Merrick," answered Dick. "We want to locate Treasure Isle and get the gold and jewels before he knows what we are up to." "What's the name of the steam yacht?" "The _Rainbow_." "That's a good name, for a rainbow is a sign of good promise," was Songbird's comment. The party had to make one change of cars and had their dinner on the train. They arrived at the Grand Central Depot at half past two o'clock and the Rovers went to a nearby hotel, taking Aleck with them, while Songbird hurried off to transact his business with his uncle. Mr. Rover had to meet some men who were interested in his mining ventures in the far west, and so, after accommodations had been obtained, he hurried off, leaving the boys to their own devices. "Let us take a stroll down Broadway," suggested Sam, to whom the sights of this busy thoroughfare were always interesting. The others were willing, and they passed through Forty-second street to Broadway and then turned southward. The street was filled with wagons, trucks and trolley cars, and the sidewalk appeared to "overflow with folks," as Sam said. At one point a man was giving some sort of an exhibition in a store window and here the crowd was so great they had to walk out into the gutter to get past. "I can tell you one thing," remarked Dick. "There is after all but one New York and no other city is like it." The boys walked slowly as far as Union Square and then sat down on one of the park benches to rest. Nearly all the benches were filled with people and in idle curiosity Dick began to scan the various types of men present, from bright, brisk clerks to fat and unshaved bummers, too lazy to work. "Hullo!" Dick uttered the exclamation so abruptly that Sam and Tom were startled. "What do you see?" queried both. "Look there!" They gazed in the direction Dick pointed out and on a distant bench saw a youth of about Tom's age, but heavier-set, talking to a man who wore a rusty suit of brown and a peculiarly-shaped slouch hat. "Why, that's Tad Sobber!" cried Tom. "So it is," added Sam. "Who is that fellow with him?" "I don't know, although his figure looks somewhat familiar to me," answered Dick. "What can Tad be doing in New York?" questioned Tom. "Do you suppose he is down here with Sid Merrick?" "Perhaps." "Let's go over and see what he has to say for himself," suggested Sam. "Maybe he'll run away when he sees us."