The Treasure of Pearls by Gustave Aimard

The farewell to the American was still "warm," when don Jorge, spite of his grief, begged Mr. Gladsden to await his return, as he felt bound to "go up the country" to make sure the rebellion was over. He had spoken in such a matter-of-fact way that the Englishman shared with his wife and sister, and don Benito's widow, much wonder at his absence being protracted. To have clearly known the reason, and to see him again, they would have been compelled to follow him to the very border of Sonora and Arizona.

The _Sierra de Pajaros_, a broken side piece of the Sierra Madre, may be said to divide on its double water shed the feeders of the Yaqui River and the San Pedro, which courses north and west to supply the Gila. It has the most picturesque and striking aspect of any mountains in those regions, of old forests and cloud-capped peaks. Under the majestic bluffs, the ruins of ancient Spanish settlements crumble away, and the mysterious Pimas Indians prowl.