The dog was not this time barking near the mouth of the well, but at the threshold of the door, at which he was scratching as if he wished to burst it open. Jup was also uttering piercing cries.

“Hello, Top!” cried Neb, who was the first awake. But the dog continued to bark more furiously than ever.

“What’s the matter now?” asked Harding.

And all dressing in haste rushed to the windows, which they opened.

Beneath their eyes was spread a sheet of snow which looked gray in the dim light. The settlers could see nothing, but they heard a singular yelping noise away in the darkness. It was evident that the beach had been invaded by a number of animals which could not be seen.

“What are they?” cried Pencroft.

“Wolves, jaguars, or apes?” replied Neb.

“They have nearly reached the plateau,” said the reporter.

“And our poultry-yard,” exclaimed Herbert, “and our garden!”

“Where can they have crossed?” asked Pencroft.