Marengus — Chemical Pallas, ca. 1675 Multilingual MS

If you keep it on the fire, all the water will remain at the bottom of the vessel and thus nothing will be lost.

It should be noted that if the mineral ore does not contain imperfect metals such as lead, tin, or copper but only gold symbol: ☉ that is fouled or mixed, it will be sufficient to wash the already crushed and sifted mineral powders with some lixivium a solution of alkaline salts or lye mixed with common salt. Afterward, wash them again with common water, dry them, and then place them inside the mill and operate as described above.

Similarly, it should be observed that if any Argentum silver extracted from ores with mercury is volatile, you can filter some part of the mercury through a leather bag. Leave some part of it with the silver or gold from the labili?. Then, by boiling and fixando fixing, making a substance resistant to heat them together, you will have fixed gold, even with an increase in weight. This happens because some part of the mercury will be fixed along with it. Or you may do it this way: first, you must have fixed Salnitrum saltpeter or niter. You shall fix it in this manner:

Take purified saltpeter and separate its spirit from it using a Retorta retort, a glass vessel with a long neck. From the caput mortuum dead head, the dregs or residue left after distillation, extract whatever can be extracted with rain water at a light heat. Afterward, evaporate

the water symbol: 🜔, water and you will have fixed saltpeter. If you wish, you can then add its spirit back to it in parts. Unite them and coagulate them together with light heat. Then, take the said gold or volatile silver, a portion of mercury, and the said fixed saltpeter. Cimenta cement, or heat in a sealed container for six hours with a light fire, then with a stronger fire. You will have a fixed matter with an increase in weight, because some part of the mercury will also be fixed. Afterward, wash, dry, and melt the fixed matter.

Note here that with the said water symbol: 🜔 you can fix many compositions or mixtures made from gold and common mercury by amalgamando amalgamating, mixing mercury with another metal everything together with the said fixed water and boiling it, as you can easily gather from what is to be said.