At last the coast changed and grew green and low and exceedingly muddy, and there were broad rivers whose bars were little islands standing three or four miles out at sea, and Bai-Jove-Judson hugged the shore more closely than ever, remembering what the Lieutenant of the “Mongoose” had told him. Then he found a river full of the smell of fever and mud, with green stuff growing far into its waters, and a current that made the flatiron gasp and grunt. “We will turn up here,” said Bai-Jove-Judson, and they turned up accordingly; Mr. Davies wondering what in the world it all meant, and the Kroo boys grinning. Bai-Jove-Judson went forward to the bows and meditated, staring through the muddy waters. After six hours of rooting through this desolation at an average rate of five miles an hour, his eyes were cheered by the sight of one white buoy in the coffee-hued mid-stream. The flat-iron crept up to it cautiously, and a leadsman took soundings all around it from a dinghy, while Bai-Jove-Judson smoked and thought, with his head on one side. “About seven feet, isn't there?” said he. “That must be the tail end of the shoal. There's four fathom in the fairway. Knock that buoy down with axes. I don't think it's picturesque somehow.” The Kroo men hacked the wooden sides to pieces in three minutes, and the mooring-chain sank with the lasst splinters of wood. Bai-Jove Judson laid the flat-iron carefully over the site, while Mr. Davies watched, biting his nails nervously. “Can you back her against this current?” said Bai-Jove-Judson. Mr. Davies could, inch by inch, but only inch by inch, and Bai-Jove-Judson sat in the bows and gazed at various things on the bank as they came into line or opened out. The flatiron dropped down over the tail of the shoal, exactly where the buoy had been, and backed once before Bai-Jove-Judson was satisfied. Then they went up stream for half an hour, put into shoal water by the bank and waited, with a slip-rope on the anchor. “Seems to me,” said Mr. Davies deferentially, “like as if I heard some one a-firing off at intervals, so to say.” There was beyond doubt a dull mutter in the air. “Seems to me,” said Bai-Jove-Judson, “as if I heard a screw. Stand by to slip her moorings.” Another ten minutes passed and the beat of engines grew plainer. Then round the bend of the river came a remarkably prettily built white-painted gunboat with a blue and white flag bearing a red boss in the centre. “Unshackle abaft the windlass! Stream both buoys! Easy, astern. Let go, all!” The slip-rope flew out, the two buoys bobbed in the water to mark where anchor and cable had been left, and the flat-iron waddled out into midstream with the white ensign at her one mast-head. “Give her all you can. That thing has the legs of us,” said Judson. “And down we go!” “It's war--bloody war. He's going to fire,” said Mr. Davies, looking up through the engine-room hatch.