. "As their situation and other circumstances require that each should be treated distinctly, I shall begin with Quixos, which on the north side borders on the jurisdiction of Popayan; eastward it reaches to the river Aguarico, and westward is separated from the jurisdictions of Quito, Latacunga, and the town of San Miguel de Ibarra, by the Cordilleras of Cotopaxi and Cayamburo." . . .