“Ah, that has been the problem,” replied Captain Snow. “I have on board every sort of diving apparatus. But the depth is so great that I fear the risk of descending.”

“An ordinary diving suit would never do,” said Frank.

“But I have a plan for dredging. It is not of the most perfect kind——”

“Wait,” said Frank, with resolution. “Set all your doubts at rest. I have a plan by which you can recover your pearls. If you will accept the offer I will place the Dolphin at your disposal.”

A glad, eager cry escaped Captain Uriah’s lips.

“That is grand!” he cried. “I had not dared to broach the matter to you. But I see that you are very kindly disposed to assist me. There is fortune enough there for many and all of us.”

Frank made a deprecatory gesture.

“I care not for the fortune,” he said; “but I am interested in your project and will gladly help you.”

“A thousand thanks!” cried Captain Uriah, wildly; “the problem is then all settled. With your submarine boat it will be easy enough to recover enough of the pearls to satisfy us. I shall never forget this favor, Mr. Reade.”

“Don’t mention it,” said Frank, politely. “Are we far from the locality of the pearl valley?”