Note 12 — Expedition to the Mines of the Igorrotes
Reading edition
See Humboldt’s account of the mining methods and processes in vogue in Nueva España, in his New Spain (Black’s trans.), iii, pp. 231–280.
Reading edition
See Humboldt’s account of the mining methods and processes in vogue in Nueva España, in his New Spain (Black’s trans.), iii, pp. 231–280.