CHAPTER FOUR
"We must be pretty near the train by this time," said Dick; "unless—"
"Unless what?" demanded Doc.
"We might not be on the right trail," suggested the other. "We might be lost after all."
"Gee, don't say that, Dick. If we're lost now, we'll never find our way out. We'll have to stay in this jungle until we—"
"Until we what?"
"I don't like to say it."
"You mean until we die?"
Doc nodded his head and the boys moved on in silence, each intent upon his own gloomy thoughts. Behind them, just out of sight, came the black warrior, Zopinga. Presently Doc stopped.
"Dick!" he cried. "Do you smell something?"