Dorothy made a clutch at her, and catching her by the arm, held her fast. “Buck up!” she said sharply. “Buck up and strike out, or we’ll all be drowned. Keep afloat a minute; help is coming.”

Miss Ball had done her bit, and there was no more do in her. She flung out her hands with a feeble and spasmodic effort, which amounted to nothing as far as helping herself went.

Dorothy was in despair. Her own strength was waning, her heart was beating in a choking fashion, there was a loud singing in her ears, and her arms felt as if they were being dragged out of their sockets. She could not stand the strain another moment. Where was Miss Mordaunt, and why did she not come to the rescue?

Miss Ball was sinking—oh! she was surely sinking. Dorothy felt she could not hold the poor thing up for another second, for she was having to keep Cissie afloat too, and Cissie was squirming and kicking in the most dangerous fashion.

“Courage, Dorothy, I am here!” panted a voice close to her, and realizing that Miss Mordaunt was close at hand, Dorothy’s courage began instantly to revive.

Miss Mordaunt laid hold of Miss Ball, who was by this time limp and unconscious.

“Can you hold Cissie until I come?” panted Miss Mordaunt, who was moving rapidly to get the helpless Miss Ball ashore.

“I can manage,” Dorothy called out cheerily. She put every bit of courage she possessed into her voice so that Miss Mordaunt might be helped. There is nothing like courage to inspire courage, and although the others were doubtless swimming out to their help, there was a good distance to cover, and it was a very choppy sea.

Dorothy shifted Cissie, because the little girl’s face was so low down that it kept getting under water.

Cissie, feeling the movement, and believing that her rescuer was letting her go, made a sudden, despairing effort, and gripped Dorothy round the shoulders. Lucky for Dorothy it was that the choking grip did not get her round the throat. It was bad enough as it was, for she could not move her arms, and was dependent on her feet for keeping herself and Cissie from drifting farther out to sea.