Part 2 - Khara-sattva

Essence of earthworms is to be cleansed with water, and rubbed for one day each with the juice of bhringa-raja, nimbu (lemon fruit), and nirgundi. It is then to be rubbed with the Dravana-varga^[1] and made into a lump, which is to be confined in a strong crucible, and heated steadily for forty eight minutes. When cooled of itself, the contents of the crucible are to be taken out and kept on a piece of smooth stone slab from which are to be collected the heavy metallic dusts of the shape of mustard seeds. These are to be mixed with one twelfth their weight of copper, and again heated in a crucible. The metallic dust is then to be separated from foreign matter by being washed off: with water. It is then to be used for the liquefaction of diamond, etc. It is called khara-sattva. It is not a good rasayana fa medicine which can prevent and cure senile decay).