"I'm afraid so," answered Ned, as he played the light on the doomed craft. Even as he did so he saw a great wave engulf her, and, a moment later she sank. "She's gone," he said softly.

"Too bad!" exclaimed the man. "She was a fine little craft. But how in the world did you happen along to rescue us? Whose airship is this?"

"Tom Swift's," answered Ned, and, at the sound of the name the woman uttered a cry, as she rushed into the motor room.

"Tom Swift!" she exclaimed. "Where is he? Oh, can it be possible that it is the same Tom Swift that rescued us in Africa?"

"I think it is, Mrs. Illingway," spoke Ned quietly, for he now recognized the missionary, though he wondered what she and her husband were doing so far from the Dark Continent.

"Oh, I know you--you're Ned Newton--Tom's chum! Oh, I am so glad! Where is Tom?"

"In the pilot house. He'll be here in a moment."

Tom came in at that juncture, having set the automatic steering geer to take the ship on her homeward course.

"Are they all saved?" he asked, looking at the little group of persons who had climbed up from the motor boat. "Mr. Damon, you had better make some hot coffee. Koku, you help. I--"

"Tom Swift!" cried out Mr. and Mrs. Illingway together, as they made a rush for the young inventor. "Don't you know us?"