and turning like a dolphin at play and then floating luxuriously upon his back for awhile. As he drew nearer to the girls Susie whispered:
"Now scream—and scream loud, mind you!"
In amazement they watched her swim out a few strokes—for the girl could actually swim—and then saw her throw up her hands and heard her cry out.
Wildly they shrieked a chorus. It was the real thing in the way of a scream, and owed part of its vigor to the fact that Susie's action seemed horribly natural.
Instantly the young man rolled off his back and elevated his head, treading water. He saw a girl struggling madly and heard the shrill outcry of her companions. A moment more he was dashing to the rescue.
Did Susie see him coming through one corner of her eye? She disappeared entirely, and was under water
