Through a big leak, caused where a seam had ripped open under the strain of the exploded waterspout, the precious driving fluid of the "Nomad" had nearly all escaped.

Worse still, the auxiliary tanks were also found to be almost emptied, their supply being fed by pressure into the main one. So large was the leak that scores of gallons had escaped into the sea by the time it was discovered.

"Then we are stuck without power to go ahead or turn back!" exclaimed Nat, voicing the general dismay.

"If you don't count the sails, which are only good when the wind blows, I guess you have hit it right, lad," said Captain Akers, very soberly.

CHAPTER XIV.
A MYSTERIOUS CRAFT.

A more careful examination showed that they had not underestimated the seriousness of the loss of the motive fluid. Moreover, in reviewing the situation, it became apparent that unless they made for Honolulu, which port was still a great distance off, they would not be able to renew their supply.

Still more alarming was the prospect involving the food supply. Under power, as the "Nomad" had been provisioned for the voyage down the coast, they would have had enough and to spare. But depending on sail for driving them along it was doubtful if the provisions would last nearly all the distance.

In fact, after a consultation had been held in the cabin, they had to own, with what bitterness you may suppose, that the expedition must be abandoned and a return for the California coast begun. Even at that, if they met contrary winds it might be days before they reached it.

The sleep of those on board the "Nomad" that night was broken and disturbed. Little was said after the decision to abandon the chase of the schooner had been reached. But how all felt about it could have been seen before they retired, by their gloomy countenances and voices. It was in truth a sad blow to them all. Even Cal, who, as has been said, had no great love for the water, took a keen interest in the object of the voyage, namely to bring the wrongdoers to book. He was heartily disgusted at this termination to all their plans. As for Sam Hinckley, the engineer, he sat in silence in his motionless, silent engine room, gloomily staring at his unmoving engines.