Bruce led the way. Descending carefully over the bows, he dropped into the water, which he found up to his armpits. The others followed, and found it deeper for their shorter stature. It was over the shoulders of Bart and Phil. Bart, however, took his place by Bruce’s side, and prepared to walk ahead with his pole. Their first object was to get into shallower water, and so they walked in the direction of the shore until the water was not above their waists. Then they turned to the right, toward the sand-spit. If it had not been for the bundles, they could have varied their progress by swimming; but as it was, they had to wade, and feel the way cautiously, for fear of air-holes and quicksands. The surface mud beneath their feet was very soft; but they did not sink very deeply, and with every step they acquired fresh confidence. As they neared the sand-spit, the bottom grew sensibly harder, and shoaled rapidly, till it was not much above their knees. At length it became a sandy bottom, and they walked along more rapidly, no longer feeling their way. Suddenly they were startled by a wild shout from Arthur. He had been walking behind with Phil, and was some distance from the others, when rapidly, between him and them, darted the form of a large fish, which, in that shoal water, was as visible as if it were on land. At the cry which he gave, Bruce and the others turned, and saw Arthur with his handspike in the air, and the fish floundering and splashing close beside. For a moment the blood of all of them froze with horror; the next instant Arthur sprang forward, and dealt a tremendous blow with his heavy handspike full on the head of the fish. The monster splashed and struggled, and moved back into deeper water for a few feet. “Run, run!” cried Arthur. “It’s a shark! Run for your lives!” The boys all set off as fast as they could toward the sand-spit, which now was close by them. But the fish was not to be easily escaped. In a few minutes it’s dark form was beside them, and soon it crossed immediately in front of Bruce and Bart. Mechanically, and in utter horror, both the boys swung up their boat-hooks, and dashed them wildly against the dark figure. Both struck home. There was a fearful splashing and writhing. Bart’s boat-hook was wrenched from his hand, and the fish darted forward into shoaler water. [Illustration: 0201] “Run, boys, run!” shouted Bruce, holding his boathook toward the fish, and slowly retreating, so as to keep the monster in sight. Away they went, Phil and Tom first, then Arthur. Bart moved forward, and then, seeing his pole floating a few feet on one side, made a rush for it and secured it. Then he kept by Bruce’s side, ready to help him in guarding the retreat of the others. The fish continued to splash and writhe about, either because he was bewildered by the shoal water, or else because he was suffering from the wounds which had been inflicted. As he did not pursue, Bruce and Bart took fresh courage.