Then he sprang to his feet and gave crisp orders to get the submarine under way. "See that the lad is clothed and well taken care of, Mr. Warren," he ordered, as his commands were being carried out. "He's evidently had some rather strenuous experiences, during the last few hours, and a little food and rest will do him a lot of good. We can wake him up when we need him."

Lieut. Warren saluted, and motioned to Bert to follow him. He led him through a long passage to the officers' dining room, and when a place was set for him at the table Bert fell to with a good appetite. The officers were naturally very much interested in his adventures, and he told them as much of his recent experiences as he thought fit, of course not mentioning details of the plot. Before very long they asked him his name, and when they learned that he was actually the man who had won the Marathon race at the last Olympic games, they would gladly have made him a present of the ship had they been able.

It was with the greatest difficulty that he finally broke away and made an attempt to get a little sleep. He was so excited that he found this impossible, however, and soon returned to the company of the officers. The electric motors driving the ship were humming at top speed, and the registering apparatus indicated a rate of fifteen knots an hour. This was good speed for a submarine, but Bert figured that, as the yacht on which he had been carried out was unusually swift, it must have traveled at least one hundred and fifty miles from the Colon harbor. At the rate of fifteen knots an hour, then, it would take them a little over ten hours to get back into the harbor, and he did not know how much longer to get up the canal to the mined gate of the lock. There was always the chance of accidents or delay, and he must reach the city before the morrow dawned.

CHAPTER XV

CUTTING THE WIRES

It seemed as though the time would never pass, and he tried to divert his mind by looking out of the glass windows or portholes, set in near the bow of the submarine. The boat was equipped with a powerful searchlight, which threw its brilliant rays far ahead, and lit up the ocean for a considerable distance all around. Even in his agitated state of mind, he found time to wonder at the dense and active life of the sea. Fishes, large and small and of every conceivable shape and coloring, swam close up to the porthole and seemed to be trying to look in. Some, attracted by the beams of light, followed the course of the submarine, never seeming to tire or fall back.

Every once in a while, some larger fish, engaged on a foraging expedition, would cross the path of light, and there would be a general scattering of the smaller fry, as they darted hither and thither in a frenzied search for safety. Some, indeed, the majority, were beautifully striped and spotted, and most of them Bert had never seen before. As he watched this teeming life, he grew more and more interested, and almost forgot his present surroundings. He was recalled to them by a light tap on the shoulder, and, turning around, he saw the officer, Lieutenant Warren, who had thrown him the life preserver.

"Quite an interesting study, isn't it, Mr. Wilson?" he asked, with a pleasant smile.

"I should say it was," exclaimed Bert, enthusiastically. "I never dreamed of being able to see a sight like this. It's almost worth having lived a lifetime just to have had this experience."

The other smiled at his earnestness.