The sailors had got a large hook, and had baited it with a piece of salt beef, and made it fast to a stout line with a chain that the fish couldn't bite off. This tempting morsel was flung overboard, and, as it fell with a splash into the water, we saw the fin cut toward it, and then disappear. The next instant there was a great tug at the rope. "Hurrah! we've got 'um!" yelled the boatswain. "Walk away with 'im now, my hearties." A dozen sailors had manned the rope, and now started to drag the big fish out of the water. There was a tremendous pull, a great splashing, and then the men tumbled in a heap on the dock, and the hook was jerked sharply over the rail. "Cuss the luck," growled the boatswain. "The 'ook didn't 'old." The taste of salt beef evidently suited the shark, for he was soon right alongside, cruising back and forth, looking for more. We could see him distinctly, and a tremendous fellow he was. Again the men baited the hook and dropped it overboard. We saw the big fish dart forward, turn on his side and grab the bait with a sharp snap of his terrible jaws. Again the hook would not catch, and the shark was waiting for more beef. The men were about to make a third attempt when Uncle John started. "Wait a bit, men," he said. "I've got a hook that will hold. Give me a piece of the meat." The men fell back and looked eagerly. The cook handed up a big chunk of meat. "Wipe it as dry as you can," said uncle, "and tie it firmly to the rope." When this was done he sprinkled the powder from the can carefully over the meat; then he carried it cautiously to the rail. The shark was cruising back and forth. Uncle lowered the meat slowly into the water, right in front of the monster. He saw the bait and darted at it, and then there was a tremendous report, and the spray flew into our faces as we leaned over the rail. The next moment we saw the big fish floating motionless on the water. "Blessed if 'e 'asn't blowed 'is 'ead clean hoff," said the boatswain. It was so. That terrible compound of Uncle John's had needed only the impact of the shark's teeth to explode it with deadly effect. Uncle looked perfectly happy. The effect on Helen was strange. For the first time since she had been with us she seemed to be angry.