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.

Quicksilver. 10.  Wednesday, the twenty-fourth of the said month of April, four libras of quicksilver were incorporated with four quintals of ore, obtained from a passage or opening carefully concealed in the bed of the streamlet, almost at the end of the said vein, and at the end of the other openings in it on the northwest side, where it obtains but very little sun and considerable dampness.  It is an ore that contains a quantity of antimony, and one can obtain much of it, to judge from the works that the Ygolotes had, and those that we were making, as it seemed an ore of fairly good appearance.  Compounding the assay of the said four quintals with salt and magistral, [60] the compound was washed on the second of May following, and a grain of gold of one-half real weight obtained.  Two onzas of quicksilver were lost.