Chapter 24 UNDER THE DRIFTING SNOW

Bobby and Jimmy heard the ominous booming that accompanied the parting of the floe from the land ice, and they whipped the dogs to the utmost exertion of which the animals were capable, but they had dallied too long, and when they reached the rapidly widening chasm it was plain that retreat was hopelessly cut off.

"We can swim it! We can swim!"