As it dropped upon the bottom and into the full glare of the search-light, the young inventor was astounded.
It was a human being.
A man in sailor’s garb it was.
He was gasping and apparently drowning before their eyes.
“My God!” thought Frank, with horror. “He must be saved!”
With the young inventor to think was to act.
He leaped down upon the sands and rushed to the man’s side.
In a twinkling, with Pomp’s aid, he was carried over the rail and into the vestibule.
Frank pulled the compressed air valve and the water was quickly pumped out of the compartment.
The man lay limp and helpless in Frank’s arms.