126 - To Fix Sulfur for the Above
Described Work
Have flowers of sulfur, and boil it in common oil for 1 hour, then remove this from the fire, and throw the strongest vinegar over it. Quickly the sulfur will go to the bottom, and the oil will float over the vinegar. Drain the oil, and the vinegar, and pour new oil over the sulfur, repeating as above. Do this again three times, and you will have fixed sulfur for the work described above [chapter 125].