“You know it! The river and all the islands in it!”

“Going to take the river up as you pass along?” demanded Alex.

“Oh, quit it!” Case exclaimed. “There is nothing to be gained by that sort of thing.”

“He looked so bossy,” commented Alex, “that I didn’t know but he had the key to the river in his pocket! He doesn’t look good to me, no way you can put it!”

The Señorita swept on, and was soon lost to sight behind an island. Then an entirely unexpected sight presented itself.

A boat which looked like a launch, fitted with motors and well filled with tanks and crates, shot out of a little bay and followed the steamer. Frank sprang for the glass and succeeded in getting a good view of the two occupants before the craft made the angle of the island just ahead.

“Where did that come from?” questioned Jule. “Say, but she is going after the Señorita!”

“It looks that way,” agreed Alex.

“There go the two Englishmen!” Frank said, laying down the glass, as the launch disappeared from sight. “They are going to follow the Señorita to Cloud island.”

“Whew!” ejaculated Case. “This Cloud island seems to be in good demand. I hope they won’t carry it away before we get there!”