Just what he meant to do, he did not for the moment know. Darkness had fallen. Like twin glowworms, the eyes of the wolves shone at the edge of the forest. Already some of them were creeping out into the open. There were a number of them; just how many he could not tell.

“The one that sent out the call was probably the daddy of a large family,” he told himself, “and he’s invited the whole family to a feast. But,” he said as he set his teeth hard, “there won’t be any feast if I can help it.”

Leaning his rifle against the sled, he dropped his chin on his hands to lapse into deep thought. Then suddenly he leaped into action.

“Why didn’t I think of that before?” he exclaimed as he tore at the wrappings of the sled.

He had thought of the radiophone equipment packed away on his sled, the reserve outfit which always rode there.

“If I can only get it set up,” he told himself, “I’ll be able to call Curlie. Then he and Jennings will make a dash for it. With rifles and plenty of ammunition they’ll beat the wolves off. We’ll feed some of their carcasses to the dogs and have that much more caribou meat for ourselves.”

His fingers trembled as he unpacked the detector and set it firmly upon the overturned sled. He had caught the gleam of a pair of flashing eyes much closer than he had thought the wolves would dare to come. He had caught, too, the ominous sound of chop-chopping jaws. Pete, the huskie, was ki-yi-ing and straining at his chain. Major, the dog who always guarded the sled at night, was sending forth a low rumbling challenge.

As Joe set his amplifier into position, he sent a flash of light from his electric torch full upon one of those gray beasts. The wolf, recoiling as if shot by a rifle, doubled into a heap, then sprang snarling away.

Joe laughed at this wild demonstration of fear. The next instant his face sobered. He was surprised at the size of these timber wolves and at their gauntness.

“Starved to skin and bones. Ready for anything,” he muttered grimly as he set two jointed poles straight up in the snow.