"Yes, sir," said Mark.

"Bring them directly to my cabin. The Aleuts will not hurt you, now that they know we are friends."

He hurried away, but Andy handled his rifle very suggestively and kept both eyes on the red men. The latter, however, kept to themselves and only stared at the crew of the Snowbird with great curiosity.

"Hurrah!" quoth Jack, when in earshot. "Here they are, safe and sound,
Professor!"

"We have been just as afraid that something bad was happening to you," Mark said, quickly. "Where's the machine?" "Your beautiful 'plane is badly wrecked, Mark, my boy," said Professor Henderson. "But I believe we shall be able to repair it in time. We are not, however, I feel sure, far from Aleukan. Do those men speak English?"

"Not much of it, I reckon, Professor," said Andy Sudds. "But they have got mighty nasty dispositions. If it wasn't for the fat man I reckon they would jump on us."

"He told us to follow along to his cabin," Mark proposed. "I do not think these Indians will touch us."

"They'd better think twice about it," said the belligerent Andy, pushing in between the professor and the Aleuts, as the whole party descended the mountain side toward the place where the oil man had pitched his camp.

As they proceeded the light grew and the newcomers to Alaska identified objects about them more clearly. Near at hand was the framework of a boring machine, or derrick. The professor began to notice a deposit of ash that lay thickly on the ground in sheltered places.

"How remarkable—how very remarkable!" he ejaculated. "One would think there was a volcano in action very near here."