"Morning, I guess."
"Then we'll have breakfast," said the professor with a smile.
He stepped from the bunk. As he did so there was a sudden lurch to the ship. Then it began to sink suddenly.
"We are going down!" cried the captain. "What has happened?"
"The gas bag is leaking again!" shouted Washington from the engine room.
CHAPTER XV
PRISONERS OF THE ESQUIMAUX
The hearts of all were filled with new terror. They had just come safely through one danger only to fall into another.
The professor limped to the engine room. A glance confirmed his fears.
The gas was escaping from the bag in large quantities.
"I am afraid the patch we put on has come loose," he said. "The tornado must have unfastened it. Are we over land or sea?" he asked anxiously.