Note 12 — Expedition to the Mines of the Igorrotes
Reading edition
Smelting. 26. Monday, May twenty-six, a third assay was made by refining or smelting, by feeding the dust that was left from one quintal of ore, obtained at a depth of fourteen or more estados from the first vein and hole which, I have said, was opened in the said new mine. Having consumed twenty-five libras of lead, upon which the metal melted, a grain resulted that resembles silver, and weighs one and one-half reals.12