CHAPTER VI .-- The Map Again.
"Now," Dave said, as they finished their meal on the evening after leaving Fort Mason, "we have got to consider which course we had better take.

First we will have another look at the map." This was taken out from a wash-leather case, in which it had been sewn, Dave carrying it under his shirt by a string that went round his neck.
It was the first time that the boys had seen it.

As Dave opened it they examined it with much curiosity.

It was divided in two; the upper one appeared to be a general map of the country, the lower one a plan of the immediate locality of the spot.
"It looks very confusing," Dick said, as he examined it.
"You see the chap as made it did not do it for other people, but so that he could find his way back by it.

This line that runs along the bottom of the other map I take to be the Gila, which is a big river which runs right through the Indian country, and falls into the Rio Grande.