"Can't tell. She's probably stuck on a sandbar or a snag, anywhere from five to twenty-five miles down. Don't go along, Dave, unless you want to."

"Better come home with me," urged Frank.

"Do you need me along, Jerry?" queried Dave uncertainly.

"No—" shortly—"no I don't. Mr. Fulton does—Tod does."

Jerry rose stiffly to his feet and started slowly off in the faint moonlight, without so much as a look behind.

"So long, Jerry," called Frank. "Come on, Dave."

But Dave slowly shook his head and reluctantly followed the footsteps of his chum.

"Hold on a minute, old man; I'll stick with you."

CHAPTER III

LOST ISLAND