The first word he encountered was unintelligible.

Of the next he could only make out one letter, which gave him no clue.

Evidently the map had been made with a different and less durable substance than that with which the names had been written.

He followed down the first straight black line, and where this formed a junction with a wider crooked line were two words quite distinct: "Second waterfall." Half an inch below this Rod could make out the letters T, D and L, widely scattered.
"That's the third waterfall," he exclaimed eagerly.
At this point the crude lines of the diagram stopped, and immediately below, between the map and the three names, it was evident that there had been considerable writing.

But not a word of it could the young hunters make out.