All the hills and elevations, mines, passages, veins, and works above mentioned have been examined and entered by the said miners. They have obtained and assayed metals with the greatest care possible. Each assay is set down separately so that it will stand as a testimony and token of service, with the day, month, and year, just as they have been made, in the following manner.
Refinement [of metals]. 1. First, on Palm Saturday, on the night of the thirtieth of March, one thousand six hundred and twenty-four, a refining fire was made by the said Alférez Martin de Vergara and the other miners. Upon it and seventeen libras of lead was fed the dust and sediment of one-half quintal of ore that was obtained from the hole which I have said was opened in the veins and new mines of Galan, at a depth of ten estados. A grain of the appearance of silver, and weighing as much as one real, was obtained.
Quicksilver. 2. On the said day, April six, of the said year, three quintals of ore from the same hole and veins were incorporated with three libras of quicksilver and compounded with salt. On the tenth of the said month it was washed, and a small grain of gold was obtained that weighed one-half real. In the said assay ten onzas of quicksilver were lost.
Quicksilver. 3. On the said day, April six, three libras of quicksilver were incorporated with three quintals of ore from the said hole and vein, which was obtained at a depth of ten estados; and the mixture was compounded with salt. It was washed on the tenth of the said month, and a small grain of gold of the weight of one-half real was obtained. Eleven onzas of quicksilver were lost.
Quicksilver. 4. On Sunday, April seven, two quintals of the same ore from the said hole and vein were incorporated with two libras of quicksilver, having roasted the ore while in the form of stone, before crushing it. On the eleventh it was washed, and a small grain of gold of the weight of one-half real was obtained. Six onzas of quicksilver were lost.
[5.] That day, the eleventh of the said month, in a second refinement, the dust and sediment that remained from a quintal of the same ore was put on the fire. On being fused with twenty-three libras of lead, nothing was obtained from the said assay.
Quicksilver. 6. Saturday, the thirteenth of the said month of April, one libra of quicksilver was incorporated with two and one-half arrobas of ore obtained from certain excavations found below the earth inside a little hut, near our fort and the said mine, which was burned by the Igolotes. On the eighteenth of the month it was washed, and a grain of gold weighing one real was obtained; and three onzas of quicksilver were lost.
Quicksilver. 7. Tuesday, the sixteenth, four libras of quicksilver were incorporated with four quintals of ore obtained at a depth of ten or eleven estados in the said mine and hole. Having made that assay in a stove, on the twenty-second of the said month of April they washed the said four quintals of ore, and obtained a grain of gold of the weight of one real. Two onzas of quicksilver were lost.
Quicksilver. 8. Wednesday, the seventeenth, one libra of quicksilver was incorporated with one quintal of the said ore, obtained at a depth of eleven estados. Having been treated in a reverberating furnace, on the twenty-second of the said month it was washed and a small grain of gold of barely the weight of half a real was obtained. Three and one-half onzas of quicksilver were lost.
Quicksilver. 9. Thursday, April eighteen, they recrushed and washed the sweepings and residue of the first three quintals of ore which had been compounded with quicksilver. With the one quintal that resulted therefrom, they incorporated on the said day one libra of quicksilver. On the twenty-second it was washed, and for the second time a small grain of gold was obtained of the weight of one-quarter real. Two and one-half onzas of quicksilver were lost.