"There's two things left," replied Tyke reflectively. "One of 'em is old nature herself. What she can do is a plenty, as we've seen since we come to this island----." "This infernal island," broke in the captain viciously. "I wish to heaven we'd never seen it. I wish some one of these earthquakes had sent it to the bottom of the sea." "I don't blame you much," assented Tyke. "But being here, we've got to take things as they come. Now, as I was saying, old nature may have taken a hand in causing trouble for the two young folks. But for the life of me I don't see how. We've already seen that they weren't caught under those falling trees. And there didn't any lava flow come with that last quake. And that being so I can't see where nature's got into the game. "Now," he continued, "there's just one thing left--and that's men! There may be some natives on this island that feel sore at our butting in on 'em and they may have come across them youngsters and captured 'em." "I don't think that's at all likely," rejoined the captain. "There'd certainly have been some sign of them, some boat, some hut or something else of the kind. But we haven't seen hide or hair of anything since we landed. The boat's crew, too, have been roaming over the island and they'd have reported to us anything they'd seen that looked as though people lived in this God-forsaken spot." "Yes," assented Tyke. "And it stands to reason that Allen with his automatic would have put up a fight and we'd have heard the sound of shots. But there are other men besides natives on the island." "What do you mean?" asked the captain in surprise. "I mean Ditty and his gang of water rats," replied Tyke. "You don't think that skunk would dare--" spluttered the captain. "I think that one-eyed rascal would dare almost anything," answered Tyke. "And it struck me as barely possible that he might have come sneaking around to see what we were doing and perhaps run across Allen and Ruth. There's bad blood there, as you know, and it wouldn't take much to bring about a scrap. "Not that I think that has happened," he went on, "because it isn't likely that Ditty's plans are far enough forward yet for him to show his hand. Still I may be wrong. I tell you what I think you'd better do. You can git around faster than I can with this old game leg of mine. Suppose you run back to the shore and see if Ditty is hanging around there. If he is and everything seems shipshape we can leave him out of our calculations. Then we'll have to figure out what we're to do next." It was grasping at straws, but in their utter ignorance of the real facts they had nothing but straws to grasp at. The captain set off hurriedly, while Tyke went once more around the mountain base in the forlorn hope that this time something tangible would come to reward his efforts.