But if our friends expected to reach it unmolested they were disappointed. No sooner had they increased their pace than the oxen, with snorts of rage, darted forward. The animals may have imagined they were about to be attacked, and determined to make the first move.

"Here they come!" yelled Ned.

"Sprint for it!" cried Tom.

"Oh, if I only had my gun!" groaned Abe.

It was hard work running over the ice and snow, hampered as they were with their heavy fur garments. They soon realized this, and the pace was telling on them. They were now near to the ship, but the savage creatures still were between them and the craft.

"Try around the other way!" directed Tom, They changed their direction, but the oxen also shifted their ground, and with loud bellows of rage came on, shaking their shaggy heads and big horns, while the hair, hanging down from their sides and flanks, dragged in the snow.

"Right at 'em! Run and yell!" advised the young inventor. "Maybe we can scare 'em!"

They followed his advice. Yelling like Indians the four rushed straight for the animals. For a moment only the creatures halted. Then, bellowing louder than ever they rushed straight at Tom and the others.

The largest of the oxen, with a sudden swerve, made for Mr. Parker, who was slightly in the lead off to one side. In an instant the scientist was tossed high in the air, falling in a snow bank.

"Mr. Damon! Mr. Damon!" yelled Tom, frantically. "Get a gun and shoot these beasts!"