Tom still gripped the second negro, and playfully lifted him from off his feet as if he were merely a child, then he set him down against the ship's rail, while the two at once stared into the water. Truly they might have been described as brothers, so very alike were Tom and Sam in appearance. In fact, had their two heads been alone protruding from a window even Sadie would have been troubled to distinguish between them; but the similarity ended with the faces. Tom was huge, Sam was barely five feet in height, and slim in proportion; but he seemed to have inherited all the dignity which Tom had missed. Merry enough at all times, Sam was inclined to be a trifle pompous, and of a Sunday, when in port, his get-up generally was sufficient to open the eyes of everyone who beheld him. Now, however, his feet were bare, and he wore but a shirt and loose cotton trousers. Let us join them at the rail and stare over into the water. Beneath the oily surface a wide stretch of yellowish-white sand was spread out on every hand, till it became a greenish tinge, and was finally lost in the blurr of the ocean; but directly beneath the ship it sparkled in the sun, while one could easily see the tiniest prominence, the few rocks existing here and there, and the deep shadow of the ship riding to her anchors. A derrick was rigged out over the rail, close to the platform occupied by Sadie, and from this was suspended a long wooden ladder, with ponderous weights attached to its lower end. Close at hand, through a sort of stirrup, passed a couple of ropes, while the piping conveying air to those below ran out over the gangway. It was there, too, that the smaller signal lines were attached. As Tom and Sam looked over, their eyes caught the reflection from two metal objects down below, and very soon the latter became apparent as the helmets of the divers. They could see the two--for there were that number at work--seated on a huge boulder, side by side, while within some fifteen feet of them were the broken timbers and debris of what had once upon a time been a vessel. "They've sat like that this past fifteen minutes," explained Sadie. "Seems that there's nothing to be found in the wreck. They'll be wanting to be hauled aboard in a minute. There's George moving." As she spoke, one of the helmets swung slowly backwards, while the eyes inside peered aloft. Then there came a jerk at the life line. Sadie instantly responded. "Coming up," she said. "Get a hold of the tackle, boys."