But the fourth, midshipman was floundering about wildly.

Then he disappeared beneath the water.
"That young man has given up and gone down!" cried Mrs.Meade, whom Dave had just persuaded to resume her seat.
"No," Dave assured her.

"Gray isn't drowning.

But his girl companion is missing, and he has dived to find her." "Then the girl is lost!" quivered Mrs.Meade.
"No; I think not.

Gray is a fine swimmer, and will find Miss Butler before she has been under too long a time." Then Dave rose, for he was commander here.