"Call your comrades," cried Captain Sumner to the sailor. "Give them a chance for life. Come, Mrs. Cromwell, Viola, Bob, Jack—all of you. Prepare to jump for the ice, when we strike! It's our only hope!"

Chapter IV.—The Escape From The Icebergs.

To Captain Sumner it looked as if the Dart would surely be crushed.

"Be prepared to jump!" he sang out again.

But even as he spoke a strong gust filled the yacht's topsails.

She plunged forward.

The starboard berg was left behind, and the sea on that bow was open.

Bok instantly shifted the helm.

The Dart's head fell away from the danger on the port bow.

A few minutes passed.