Exploration of the Valley of the Amazon, Part 1 (of 2)

by William Lewis Herndon; Lardner Gibbon

From Yanacoto, on the western slope of the Andes, to the top of the Pass, is fifty-nine miles; from the top of the Pass to Fort San Ramon, on the eastern slope, which is two hundred and seventy feet higher than Yanacoto, is eighty-eight miles. This gives the ascent of the Andes, on its western slope, at 232 feet to the mile, and on its eastern slope at 152.

Lt. Gibbon del.

Wagner & M^cGuigan's Lith. Phila.

OROYA.
Pl. 7.

Lt. Gibbon del.

Wagner & M^cGuigan's Lith. Phila.