“That is the most simple of all my inventions,” he said.
“You don’t happen to have two of those wonderful diving suits, do you?”
“I have half a dozen.”
“Good! Would you mind my putting on one of them and accompanying you?”
“Certainly you may.”
Frank called to Barney, who brought out the diving suits. Two of them were selected.
Frank and Clifford were soon encased in the suits, and ready to leave the cabin.
Each carried a small ax at the girdle. Otherwise they were unarmed.
Of course there was something to fear from the monsters of the deep, but neither shrank from the risk. A moment later they entered the vestibule.
Then Frank closed the cabin door and pressed a valve. Instantly the vestibule filled with water.