"On all sandy coasts," he said, "the return waves that are cast on the beach form a bar, by washing back with them a portion of the particles. This bar is usually within thirty or forty fathoms of the shore, and there is frequently sufficient water within it to float a ship. As this bar, however, prevents the return of all the water, on what is called the under-tow, narrow channels make from point to point, through which this excess of the element escapes. These channels are known by the appearance of the water over them, the seas breaking less at those particular places than in the spots where the bottom lies nearer to the surface, and all experienced mariners are aware of the fact. No doubt, the unfortunate master of this ship, finding himself reduced to the necessity of running ashore to save the lives of his crew, has chosen such a place, and has consequently forced his vessel up to a spot where she has remained dry as soon as the sea fell. So worthy a fellow deserved a better fate; for this wreck is not three days old, and yet no signs are to be seen of any who were in that stout ship." These remarks were made as the crew of the two boats lay on their oars, at a short distance without the line on the water, where the breaking of the sea pointed out the position of the bar. The channel, also, was plainly visible directly astern of the ship, the sea merely rising and falling in it without combing. A short distance to the southward, a few bold black rocks thrust themselves forward, and formed a sort of bay, in which it was practicable to land without risk; for they had come on the coast in a region where the monotony of the sands, as it appeared when close in, was little relieved by the presence of anything else. "If you will keep the cutter just without the breakers, Mr. Effingham," Captain Truck continued, after standing up a while and examining the shore, "I will pull into the channel, and land in yonder bay. If you feel disposed to follow, you may do so by giving the tiller to Mr. Blunt, on receiving a signal to that effect from me. Be steady, gentlemen, at your oars, and look well to the arms on landing, for we are in a knavish part of the world. Should any of the monkeys or ouran-outangs claim kindred with Mr. Saunders, we may find it no easy matter to persuade them to leave us the pleasure of his society." The captain made a sign, and the jolly-boat entered the channel. Inclining south, it was seen rising and falling just within the breakers, and then it was hid by the rocks. In another minute, Mr. Truck, followed by all but Mr. Monday, who stood sentinel at the boat, was on the rocks, making his way towards the wreck. On reaching the latter, he ascended swiftly even to the main cross-trees. Here a long examination of the plain, beyond the bank that hid it from the view of all beneath, succeeded, and then the signal to come on was made to those who were still in the boat.