The speed was very swift and the wind caused by the rapid passage cut in their faces so that all had to pull their fur hoods over their heads. The ice, scraped up by the runners, flew in a shower on either side.

The Esquimaux skillfully steered the sled. He avoided several hollows and gullies that would have brought disaster, and kept the vehicle on a proper course. In less than five minutes from the start at the top of the hill they were at the bottom, more than a mile's distance, and within a quarter of a mile of the airship.

Joy at the discovery of the Monarch lent strength to travel-weary legs. The refugees hastened on, and soon were at the place where the craft had settled on a bank of ice and snow.

"Back to the Monarch!" shouted Andy. "I hope the ship is in working order!"

Indeed this might well be a source of worry. One glance served to show that the airship was frozen fast in the ice, while the gas bag, which had collapsed, and was resting on top of the deck-house, was partially covered with snow!

As weak as they were the boys set up a cheer and the men joined in, the sound echoing for a long distance around.

CHAPTER XXVIII

ATTACKED BY THE NATIVES

"We must clear away the snow and ice!" said Professor Henderson. "Come, boys, we must work quickly. We have no time to lose! Remember what Dirola said about the natives following us!"

Now that he was back at his craft the inventor seemed to have recovered all of his energies.