She measured the distance between it and herself with some calculation. It came on in a halting, undecided way. Perhaps the shark had not yet caught sight of any of the swimmers. Jessie flung up her arm and shouted at the top of her voice to her chum:

“Come on! Come on! Don’t let him get you!”

Amy was struggling so hard to reach the raft now that she had no breath left for speech. Jessie saw her splashing on in her wake. Behind, the boys were making a great splashing too, and Jessie realized that it was for an object. The shark might be frightened away if they made disturbance enough in the water.

Jessie was now very near the raft and the other three were bunching up not far behind her. The lifeguard shot by in his boat, yelling like mad. Darry shouted:

“Get aboard the raft, girls! Burd and I will beat him off till you are landed!”

“You come right on here, Darrington Drew!” sputtered his sister. “What good will you ever be if you get your leg bit off?”

Jessie reached the raft and seized a loop of rope hanging from it. If it had not been for this assistance she doubted if she could have hauled herself out of the water. When Amy arrived, her chum was lying over the edge of the refuge, and reached one arm out for her.

“Quick! Quick!” cried Jessie.

“Do—don’t scare me so!” gasped Amy. “I—I feel just as though he was nibbling at my toes right now!”

But it seemed no laughing matter to Jessie Norwood. Her chum, however, would find a joke in even the most serious circumstance. And the moment she lay on the raft beside Jessie she began to laugh, gaspingly.