refused them, he finally consented to don the articles of dry apparel
and seemed to be much comforted by their warmth.

Faster and faster the floe drifted, and they were now almost out of
sight of the ships. The boys' faces, although they tried not to show
their fear, grew very pale. There seemed to be no prospect of their
being saved, and in the rigorous cold of that climate they knew they
could not survive many hours without food or drink.

Suddenly Frank, who had been gloomily watching the progress of the
floe, gave a shout of surprise.

"What's the matter?" said Harry.

"Are we g-g-g-g-going d-d-d-d-down?" gasped the professor.




CHAPTER XV.

DYNAMITING THE REEF.


"No," shouted the boy, "not that, but I think I see a chance of our
being saved!"

"Have they seen us from the ships?" asked Billy.

"No, but the floe has struck a different current and we are drifting