“Strike your hardest,” puffed and panted Hiram. Whack! whack! One of the new combatants of the boys limped off with a shattered paw. The other, infuriated with pain from a terrific clip across the jaws, made direct for Elmer. Its claws clutched its prey by the shoulders. Its distended mouth sought the lad’s throat.

Once, twice, thrice the billet of wood in the grasp of Hiram arose and descended. The wolf dropped away, dripping with blood, but Elmer was saved from its murderous fangs.

“They’re coming,” he cried “A half dozen of them! Oh, good! It’s all right now.”

Over the imperilled lads and beyond them, and squarely into the faces of the howling pack, a great glare suddenly shot out. Dave had caught the situation at Hiram’s first outcry. He could not in a hurry reach the armament of weapons carried by the Comet. The big reflector lantern, however, was kept always in a handy spot, especially at nightfall. Dave had secured this. Lighting it as he ran, he flared its broad beams, focused to a dazzling brilliancy. The wolves, blinded and affrighted, drew off with sullen, menacing growlings.

“Light the fire. It will be an added safeguard,” ordered the young airman rapidly, and he moved in a circle, swinging the lantern glow continuously.

Hiram hurriedly got leaves, chips and branches together in a heap. He flared a match and ignited it.

“Those animals have given us up as hard cases, I guess,” observed Elmer, with a laugh, half nervous, but quite triumphant.

“We must draw the machine closer to us,” suggested Dave. “Help me, Elmer.”

The campfire began to blaze, Dave, with the lantern, ventured as far as the spot where the Comet was. With the aid of his companion the biplane was wheeled a few yards along the arcade, where it seemed they must make a camp, at least until the storm abated.

Hiram was getting ready to secure some food and cooking utensils from the machine, when he paused, bent his ear, and his face expressed a new alarm.