uddenly disappeared. Polly shrieked; but she could do
nothing to aid.

The spray filled her eyes again and, when she had shaken them free,
Polly saw that the other swimmer--the stronger one--had gotten her
comrade above the surface once more.

Indeed, this one was swimming on her back and holding up the girl who
had gone under. How brave she was!

The sun shone clear upon the two in the water and Polly recognized
Wynifred Mallory.

"Wyn! Wynnie! Hold to her! Hold up!" cried the boatman's daughter. "I'll
help you!"

But she was still so far away--it seemed as though the catboat never
_would_ come within hailing distance. But before she turned over in
the water to swim with Bessie's hand upon her shoulder, the captain of
the Go-Ahead Club beheld the catboat rushing down upon them.

She could only wave a beckoning hand. She could not cry out. Wyn was
well-nigh breathless, and Bessie's only hope was in her. The captain of
the canoe club had to save her strength.

Down swooped the catboat. Polly was shouting madly; but not for an
instant did she lose control of the boat or ignore the work she had in
hand. She wanted to encourage Wyn and the other; but she was taking no
chances.

Suddenly she let the sheet run and loosed the halliards. The canvas
fluttered down on the deck with a rustle and crash. The catboat sprang
to even keel, but shot on under the momentum it had gained in swooping
down upon the swamped girls.

"Wyn! hold hard! _I've got you!_"

But it was the other girl Polly grasped. Wyn had turned, thrust the
half-drowned Bessie before her, and Polly, leaning over the gunwale of
the tossing boat, seized her by the shoulders.

In a moment she heaved up, struggled, dragged the other girl forward,
and together rescuer and rescued tumbled flat into the cockpit of the
_Coquette_.

Polly shouted again:

"Wyn! Wyn! I'll come back for you----"

"Give me a hand!" cried Wyn, hanging to the rudder. "Polly! you old
darling! If you hadn't got here when you did----"

Polly left Bess to her own resources and rushed to the stern. She helped
Wyn clamber into the boat. Then she hoisted the sail again, and got way
upon the boat. She raised the canvas only a little, for she had risked
all the weight she dared upon the mast before.

"Are you all right, Bess?" cried Wyn.

"I--I'm alive. But, oh! I'm so--so sick," gasped Miss Lavine.

"Brace up, Bess! We're all right now. Polly has saved us."

"Polly?" cried Bess, s