floor, toward the elevated side of the craft.

For a second or two nothing happened. Then slowly, very slowly, the M.
N. 1 began to heel over.

"She's turning!" some one gasped.

An instant later, freed by this turning motion from the grip of the
sand bank, the submarine shot to the surface. Up and up she went,
breaking out on the open sea as a great fish darts upward from the
hidden depths.

It was the work of only a few seconds for the man nearest it to open
the hatch, and then in rushed the life-giving air. Tom and his
companions were saved, and by Koku's strength.

"Me say him machine got to come up--him come up!" said the giant,
smiling in happy fashion, when, after they had all gulped down great
mouthfuls of the precious oxygen, they were talking of their experience.

"Yes, you certainly did it," said Tom, and due credit was given to Koku.

"Never again will I travel without a gyroscope," declared Tom. "I'm
almost ready to go back and have one installed now."

"No, don't!" exclaimed the gold-seeker. "We are almost at the place of
the wreck."

"Well, I suppose we can travel more slowly and not run a risk like that
again," decided Tom. "I'll put double valves on the emergency air tank,
so no accident will release our supply again."

This was done, after the broken valves had been repaired, and then,
when the machine Koku had torn loose was fastened down again, and the
submarine restored to her former condition, a consultation was held as
to what the next step should be.

They were in the neighborhood of the West Indies, and another day, or
perhaps less, of travel would bring them approximately to the place
where the Pandora had foundered. The latitude and longitude had been
computed, and then, with air tanks filled, with batteries fully
charged, and everything possible done to insure success, the craft was
sent on the last leg of her journey.

For two days they made progress, sometimes on the surface, and again
submerged, and, finally, on the second noon, when the sun had been
"shot," Tom said:

"Well, we're here!"

"You mean at the place of the wreck?" asked Mr. Hardley.

"At the place where you say it was," corrected Tom.

"Well, if this is the place of which I gave you the longitude and
latitude, then it's down below here, somewhere," and the gold-seeker
pointed to the surface of the sea. It was a calm day and the ocean was
the proverbial mill pond.

"Let's go down and try our luck," sugge