"If we only had a cartridge," said Fred, "we might make a fire with the gun flash."

They all made another vain search of their pockets, in the faint hope of finding a cartridge or an overlooked match head.

"If we don't find some way to make a fire before sunset," said Macgregor gloomily, "we'll have to attack the cabin to-night. I really don't believe we could live through a night without fire, with nothing to eat, especially as we had no sleep last night."

"Surely if we went up to the cabin, they'd give us some fire," Maurice protested. "They wouldn't let us die in the snow."

"That's just what they count on us to do," said the Scotchman bitterly.

No one said anything about renewing the guard on the cabin. Nothing seemed to matter much—nothing except the cold. The morsels of half-raw food they had eaten that morning did not keep them from being ravenously hungry again, and an empty stomach is poor protection against Arctic cold.

Like the rest of them, Fred was heavily clad, but the cold seemed to find his skin as if he were naked. He began to feel numb to the bone, lethargic, incapable of moving. Then he realized his danger, forced himself awake, and tried to think of some expedient for making a fire.

Flints could not be found under three feet of snow. A burning-glass—if they only had one! It should have been included in the outfit.

And then an idea flashed upon him. He jumped up suddenly.

"Wait here for me, fellows!" he cried.