As they reached the summit once more Terry took a good look at him, and saw that he was agitated.

“Evidently there is something down there that he doesn’t want us to see,” whispered Terry to Prim as soon as she could do so without Joe hearing her. “When I was interested in that big fissure in the rock, he was scared stiff. I’d like to find out what he’s got down there that he doesn’t want me to see. I'm going to find out! Just watch me!”

“Please don’t, Terry! What do you care about his affairs? We’ve got troubles enough as it is. How are we ever going to get away from here? How will we fly to Peru with Dad’s papers? My head is whirling with problems and all I want to do is to get out of this jam as quickly as possible.” Prim ceased whispering as Joe came closer.

Terry was looking toward her plane. Bud Hyslop was busily testing the motor. The girl could not bear the idea that Bud should touch Skybird.

“If you don’t mind, I think I’d like to do my own repair work, Mr. Arnold,” said Terry with as polite a smile as she could muster. “I’ve always done my own overhauling and somehow, I’d rather attend to it myself. It’s very kind of you to want to be so helpful, but please tell Bud to leave my plane alone.”

As she started toward the beach where Skybird was standing, Joe Arnold stepped ahead of her. “Now don’t bother yelling and carrying on for there is no one around to hear you except some savages and they are my men. I’m boss here, and I tell you to keep quiet. I’m giving that plane to Bud Hyslop. It’s his from now on.”

“You’re giving him my plane!” stormed Terry. “You have no right to do that!”

“Is that so? Well, I’m taking the right!”

“But what about us? How can we get away?” cried Prim, almost in tears. “If you take our plane, we’ve got to stay here.”

“That’s it exactly!” Joe sneered. “Here you stay until I get ready to let you go.”