Mr. Brigham commended their zeal, repeated his encouraging auguries for their ultimate success, and warned them again of dangers ahead.

"Desperate risks are what you're to take," said he. "It may be that you have clipped the claws of the dragon, and that nothing more will be heard of the Sons of the Rising Sun. That's the bright side of the picture, but please don't look at it. In a case of this kind it is better to expect the worst; then, if better things come to you, they will be in the nature of a happy surprise."

On the second day of their stay in Para Dick went ashore and got their supplies. It had been on the schedule that the Grampus was to put in at Rio, but Mr. Brigham advised the boys to give that port a wide berth.

"Your itinerary," he explained, "is probably known to these hotheaded Japs. The way to fool them is by dodging the itinerary and putting in at the places where you are not expected."

"We'll have to stop somewhere before we round the Horn," said Matt; "and I believe we'll call at——"

"Don't tell me!" protested the consul. "Don't tell any one in Para, or even talk it over among yourselves until you are well away at sea. Then, when you speak the name of your next port of call, go down to the ocean bed and whisper it. Do you think I'm piling it on? Well, perhaps so, but I am only trying to let you understand how necessary it is to keep your own counsel. I'm mightily interested in you, and in your ultimate success, and what advice I give I give earnestly, and trust you will take it so. You'll get around the Horn, all right, and you'll get to Mare Island, and the Grampus will become part and parcel of our country's navy, perhaps with Ensign Glennie in command. That's a cinch, my lads; but what you're to go through before you reach 'Frisco is a horse of another color. Don't be overconfident. Remember what I say, and keep your eyes on the dark side of the picture. Good-by, and luck go with you."

On the morning of the third day after their arrival at Para the Grampus slipped down the river toward the open sea. She carried confident hearts and determined wills—and, in spite of the fact that all had their eyes on the "dark side of the picture," there was plenty of hope and also of good cheer in the stout steel hull of the submarine. For the king of the motor boys was in command. He had brought the Grampus through many perils, and all had faith to believe that he could bring her through many more.

THE END.

THE NEXT NUMBER (19) WILL CONTAIN

Motor Matt's Defiance;