Digesting tikshna iron, gold and makshika in mercury, and smearing copper and silver sheets

To the purified tikshna iron powder good gold powder (the commentary: an equal amount) and six times as much svarnamakshika powder are added; this powder, the food (grasa) of mercury, is put into the mercury little by little and digested by garbhadruti. During the digestion svarnamakshika powder equal to the mercury and as much gold powder are added and burned with strong fire, then pure bija, a quarter or half part, is added and digested, and the mercury becomes clear and soft. It is washed, put in a crucible, set in another vessel with the joint sealed, buried in a pit one span (12 angula) deep and covered with earth, and a fire is lit on top every day for a month; then it is taken out and worshipped with all materials and rites, ground with meghanada juice and smeared on pure copper and silver sheets, which the commentary says can make gold.